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Varvarezos L, Delgado-Guerrero J, Di Fraia M, Kelly TJ, Palacios A, Callegari C, Cavalieri AL, Coffee R, Danailov M, Decleva P, Demidovich A, DiMauro L, Düsterer S, Giannessi L, Helml W, Ilchen M, Kienberger R, Mazza T, Meyer M, Moshammer R, Pedersini C, Plekan O, Prince KC, Simoncig A, Schletter A, Ueda K, Wurzer M, Zangrando M, Martín F, Costello JT. Controlling Fragmentation of the Acetylene Cation in the Vacuum Ultraviolet via Transient Molecular Alignment. J Phys Chem Lett 2023; 14:24-31. [PMID: 36562987 PMCID: PMC9841558 DOI: 10.1021/acs.jpclett.2c03354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
An open-loop control scheme of molecular fragmentation based on transient molecular alignment combined with single-photon ionization induced by a short-wavelength free electron laser (FEL) is demonstrated for the acetylene cation. Photoelectron spectra are recorded, complementing the ion yield measurements, to demonstrate that such control is the consequence of changes in the electronic response with molecular orientation relative to the ionizing field. We show that stable C2H2+ cations are mainly produced when the molecules are parallel or nearly parallel to the FEL polarization, while the hydrogen fragmentation channel (C2H2+ → C2H+ + H) predominates when the molecule is perpendicular to that direction, thus allowing one to distinguish between the two photochemical processes. The experimental findings are supported by state-of-the art theoretical calculations.
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Affiliation(s)
- L. Varvarezos
- School
of Physical Sciences and National Centre for Plasma Science and Technology, Dublin City University, Dublin 9, Ireland
| | - J. Delgado-Guerrero
- Departamento
de Química, Módulo 13, Universidad
Autónoma de Madrid, 28049 Madrid, Spain
- Instituto
Madrileño de Estudios Advanzados en Nanociencia, Cantoblanco, 28049 Madrid, Spain
| | - M. Di Fraia
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - T. J. Kelly
- Department
of Computer Science and Applied Physics, Atlantic Technological University, T91 T8NW Galway, Ireland
| | - A. Palacios
- Departamento
de Química, Módulo 13, Universidad
Autónoma de Madrid, 28049 Madrid, Spain
- Institute
for Advanced Research in Chimical Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - C. Callegari
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - A. L. Cavalieri
- Institute
of Applied Physics, University of Bern, 3012 Bern, Switzerland
- Paul
Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - R. Coffee
- Linac
Coherent Light Source/SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - M. Danailov
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - P. Decleva
- Istituto
Officina dei Materiali IOM-CNR and Dipartimento di Scienze Chimiche
e Farmaceutiche, Università degli
Studi di Trieste, 34121 Trieste, Italy
| | - A. Demidovich
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - L. DiMauro
- Department
of Physics, The Ohio State University, Columbus, Ohio 43210, United States
| | - S. Düsterer
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - L. Giannessi
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - W. Helml
- Fakultät
Physik, Technische Universität Dortmund, Maria-Goeppert-Mayer-Str. 2, 44227 Dortmund, Germany
| | - M. Ilchen
- Institut
fur Physik und CINSaT, Universitat Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
- European XFEL, Holzkoppel
4, 22869 Schenefeld, Germany
| | - R. Kienberger
- Physics
Department, Technische Universität
München, 85748 Garching, Germany
| | - T. Mazza
- European XFEL, Holzkoppel
4, 22869 Schenefeld, Germany
| | - M. Meyer
- European XFEL, Holzkoppel
4, 22869 Schenefeld, Germany
| | - R. Moshammer
- Max-Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - C. Pedersini
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - O. Plekan
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - K. C. Prince
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
- Department
of Chemistry and Biotechnology, Swinburne
University of Technology, Melbourne, Victoria 3122, Australia
| | - A. Simoncig
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
| | - A. Schletter
- Physics
Department, Technische Universität
München, 85748 Garching, Germany
| | - K. Ueda
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - M. Wurzer
- Physics
Department, Technische Universität
München, 85748 Garching, Germany
| | - M. Zangrando
- Elettra-Sincrotrone
Trieste S.C.p.A., Basovizza, 34149 Trieste, Italy
- Istituto
Officina dei Materiali, Consiglio Nazionale
delle Ricerche, 34149 Trieste, Italy
| | - F. Martín
- Departamento
de Química, Módulo 13, Universidad
Autónoma de Madrid, 28049 Madrid, Spain
- Instituto
Madrileño de Estudios Advanzados en Nanociencia, Cantoblanco, 28049 Madrid, Spain
- Condensed
Matter Physics Center, Universidad Autónoma
de Madrid, 28049 Madrid, Spain
| | - J. T. Costello
- School
of Physical Sciences and National Centre for Plasma Science and Technology, Dublin City University, Dublin 9, Ireland
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2
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Caselli I, Bellini A, Colombo S, Ielmini M, Callegari C. Pharmacological Interventions versus Combined Treatment of Depression: A Prospective Study. Psychopharmacol Bull 2022; 52:69-84. [PMID: 36339279 PMCID: PMC9611801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Introduction Depression is a common disease worldwide but still, the role of combined treatment (pharmacological and psychological interventions) needs to be clarified. The study aims to compare the effectiveness of integrated treatment versus exclusive pharmacological intervention of depression. Materials and methods The observational prospective study provided the collection of data relating to outpatients evaluated through the administration of the Hamilton Depression Rating Scale (HDRS), the Hamilton Anxiety Rating Scale (HARS), and the Clinical Global Impression Scale (CGI) both at T0 and at a 3-month follow up visit (T1). Results A statically significant association between sex (female) and psychotherapy utilization emerged. A statistically significant association between education (graduated patients) and psychotherapy use was observed. The other qualitative variables showed no statistically significance associations. No significant association between drop out and type of treatment emerged. Discussion Clinical research has not yet conclusively demonstrated the superiority of combined therapy over single treatments. As regards sex, the result is in line with the professional literature and provides support in describing how men have more stigmatizing beliefs about treatment of mental health. As regards education, graduated people present higher rates of adherence probably because they may have major introspective capacity and predisposition to communication. Conclusions Limitations consist in small sample and short duration of the follow-up (3 months). The strengths, in the type of setting and the respect for routine clinical practice. Future perspective of the research could focus on application of rating instruments to highlight the variables involved in depressive disorder.
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Affiliation(s)
- I Caselli
- Caselli, Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Varese (VA), Italy
| | - A Bellini
- Bellini, Department of Medicine and Surgery, Division of Psychiatry, University of Pavia, Pavia (PV), Italy
| | - S Colombo
- Colombo, Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Varese (VA), Italy
| | - M Ielmini
- Ielmini, Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Varese (VA), Italy
| | - C Callegari
- Callegari, Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Varese (VA), Italy
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3
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Gasparini A, Callegari C, Lucca G, Bellini A, Caselli I, Ielmini M. Inflammatory Biomarker and Response to Antidepressant in Major Depressive Disorder: a Systematic Review and Meta-Analysis. Psychopharmacol Bull 2022; 52:36-52. [PMID: 35342200 PMCID: PMC8896754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
Inadequate response to antidepressant treatment, in a significant proportion of patients diagnosed with Major Depressive Disorder, contributes to the large burden of disability associated with the disease; thus, predicting treatment response is one of the most important challenge for clinicians who deal with depressed patients. The cytokine hypothesis of depression suggests that altered pheripheral cytokine levels are involved in the pathophysiology of depressive disorder and in modulating response to treatment. Present meta-analysis aimed to investigate the association between cytokine levels at baseline and response to antidepressant therapies. Authors performed a systematic search of PubMed and Embase databases for studies published between 2010 and January 2021: of 3345 identified records, 31 studies met the inclusion criteria for the qualitative synthesis, whereas 19 studies were eligible for quantitative analysis. Patients who failed to respond to antidepressant had aberrant inflammatory process, namely higher baseline levels of C-Reactive Protein and Interleukine-8, which is associated with treatment outcome in Major Depressive Disorder. Despite these promising results, further investigations are needed in order to replicate the data and to examine the potential role of inflammatory marker as a novel predictive tool for pharmacological treatment of depressive disorder.
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4
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Michiels R, Abu-Samha M, Madsen LB, Binz M, Bangert U, Bruder L, Duim R, Wituschek A, LaForge AC, Squibb RJ, Feifel R, Callegari C, Di Fraia M, Danailov M, Manfredda M, Plekan O, Prince KC, Rebernik P, Zangrando M, Stienkemeier F, Mudrich M. Enhancement of Above Threshold Ionization in Resonantly Excited Helium Nanodroplets. Phys Rev Lett 2021; 127:093201. [PMID: 34506185 DOI: 10.1103/physrevlett.127.093201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/05/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Clusters and nanodroplets hold the promise of enhancing high-order nonlinear optical effects due to their high local density. However, only moderate enhancement has been demonstrated to date. Here, we report the observation of energetic electrons generated by above-threshold ionization (ATI) of helium (He) nanodroplets which are resonantly excited by ultrashort extreme ultraviolet (XUV) free-electron laser pulses and subsequently ionized by near-infrared (NIR) or near-ultraviolet (UV) pulses. The electron emission due to high-order ATI is enhanced by several orders of magnitude compared with He atoms. The crucial dependence of the ATI intensities with the number of excitations in the droplets suggests a local collective enhancement effect.
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Affiliation(s)
- R Michiels
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - M Abu-Samha
- College of Engineering and Technology, American University of the Middle East, Egaila, Kuwait
| | - L B Madsen
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - M Binz
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - U Bangert
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - L Bruder
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - R Duim
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - A Wituschek
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - A C LaForge
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - R J Squibb
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - R Feifel
- Department of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
| | - C Callegari
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Danailov
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Manfredda
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - P Rebernik
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
| | - M Zangrando
- Elettra-Sincrotrone Trieste S.C.p.A, 34149 Basovizza, Trieste, Italy
- IOM-CNR, 34149 Trieste, Italy
| | - F Stienkemeier
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - M Mudrich
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
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5
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Mudrich M, LaForge AC, Ciavardini A, O'Keeffe P, Callegari C, Coreno M, Demidovich A, Devetta M, Fraia MD, Drabbels M, Finetti P, Gessner O, Grazioli C, Hernando A, Neumark DM, Ovcharenko Y, Piseri P, Plekan O, Prince KC, Richter R, Ziemkiewicz MP, Möller T, Eloranta J, Pi M, Barranco M, Stienkemeier F. Ultrafast relaxation of photoexcited superfluid He nanodroplets. Nat Commun 2020; 11:112. [PMID: 31913265 PMCID: PMC6949273 DOI: 10.1038/s41467-019-13681-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 11/19/2019] [Indexed: 11/23/2022] Open
Abstract
The relaxation of photoexcited nanosystems is a fundamental process of light–matter interaction. Depending on the couplings of the internal degrees of freedom, relaxation can be ultrafast, converting electronic energy in a few fs, or slow, if the energy is trapped in a metastable state that decouples from its environment. Here, we study helium nanodroplets excited resonantly by femtosecond extreme-ultraviolet (XUV) pulses from a seeded free-electron laser. Despite their superfluid nature, we find that helium nanodroplets in the lowest electronically excited states undergo ultrafast relaxation. By comparing experimental photoelectron spectra with time-dependent density functional theory simulations, we unravel the full relaxation pathway: Following an ultrafast interband transition, a void nanometer-sized bubble forms around the localized excitation (He\documentclass[12pt]{minimal}
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\begin{document}$${}^{* }$$\end{document}*) within 1 ps. Subsequently, the bubble collapses and releases metastable He\documentclass[12pt]{minimal}
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\begin{document}$${}^{* }$$\end{document}* at the droplet surface. This study highlights the high level of detail achievable in probing the photodynamics of nanosystems using tunable XUV pulses. There is interest in understanding the relaxation mechanisms of photoexcitation in atoms, molecules and other complex systems. Here the authors unravel the photoexcitation and ultrafast relaxation of superfluid helium nanodroplets using a pump-probe experiment with FEL pulses.
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Affiliation(s)
- M Mudrich
- Department of Physics and Astronomy, Aarhus University, Aarhus C, 8000, Denmark.
| | - A C LaForge
- Institute of Physics, University of Freiburg, Freiburg im Breisgau, 79104, Germany.,Department of Physics, University of Connecticut, Storrs, CT, 06269, USA
| | - A Ciavardini
- CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, 00015, Italy.,CERIC-ERIC Basovizza, Trieste, 34149, Italy
| | - P O'Keeffe
- CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, 00015, Italy
| | - C Callegari
- Elettra - Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, 34149, Italy
| | - M Coreno
- CNR-ISM, Area della Ricerca di Roma 1, Monterotondo Scalo, 00015, Italy
| | - A Demidovich
- Elettra - Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, 34149, Italy
| | - M Devetta
- Dipartimento di Fisica, Università degli Studi di Milano, Milan, 20133, Italy.,CNR-IFN, Milano, 20133, Italy
| | - M Di Fraia
- Elettra - Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, 34149, Italy
| | - M Drabbels
- Laboratory of Molecular Nanodynamics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - P Finetti
- Elettra - Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, 34149, Italy
| | - O Gessner
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - C Grazioli
- CNR-IOM, Istituto Officina dei Materiali, Area Science Park - Basovizza, Trieste, 34149, Italy
| | - A Hernando
- Kido Dynamics, EPFL Innovation Park Bat. C, 1015, Lausanne, Switzerland.,IFISC (CSIC-UIB), Instituto de Fisica Interdisciplinar y Sistemas Complejos, Campus Universitat de les Illes Balears, 07122, Palma de Mallorca, Spain
| | - D M Neumark
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Y Ovcharenko
- Institut für Optik und Atomare Physik, TU-Berlin, 10623, Germany.,European XFEL, Schenefeld, 22869, Germany
| | - P Piseri
- Dipartimento di Fisica, Università degli Studi di Milano, Milan, 20133, Italy
| | - O Plekan
- Elettra - Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, 34149, Italy
| | - K C Prince
- Elettra - Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, 34149, Italy
| | - R Richter
- Elettra - Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, 34149, Italy
| | - M P Ziemkiewicz
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - T Möller
- Institut für Optik und Atomare Physik, TU-Berlin, 10623, Germany
| | - J Eloranta
- Department of Chemistry and Biochemistry, California State University at Northridge, Northridge, CA, 91330, USA
| | - M Pi
- Departament FQA, Facultat de Física, Universitat de Barcelona, Barcelona, 08028, Spain.,Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Barcelona, 08028, Spain
| | - M Barranco
- Departament FQA, Facultat de Física, Universitat de Barcelona, Barcelona, 08028, Spain.,Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, Barcelona, 08028, Spain.,Laboratoire des Collisions, Agrégats, Réactivité, IRSAMC, UMR 5589, CNRS et Université Paul Sabatier-Toulouse 3, Toulouse, Cedex 09, 31062, France
| | - F Stienkemeier
- Institute of Physics, University of Freiburg, Freiburg im Breisgau, 79104, Germany
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6
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Panella L, Incorvaia C, Caserta AV, Amata O, Consonni D, Pessina L, Leo G, Caselli I, Callegari C. A bio-psycho-social approach in elderly population: outcome of adapted physical activity in patients with osteoarthritis. Clin Ter 2019; 170:e74-e77. [PMID: 31850488 DOI: 10.7417/ct.2020.2192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The beneficial effect of physical activity on a large spectrum of diseases is well known, with particular importance for elderly people. Among the different types of activity, adapted physical activity (APA) has been applied in a number of disease-related physical deficit. OBJECTIVE The purpose of this study is to determine the outcome of a six months APA program in elder patients with osteoarthritis concerning physical and functional health and as second endpoint to determine the potential effect of AFA on reducing the risk of institutionalization. METHODS The clinical indexes used to assess the outcome included the Blaylock Risk Assessment Screening Score (BRASS), the Psychological General Well Being Index (PGWBI), the Cumulative Illness Rating Scale (CIRS), the Short Physical Performance Battery (SPPB), and the visual analogue scale (VAS). RESULTS A significant difference (p = 0.047) between the pre-APA and the post-APA value was found for BRASS, and highly significant differences (p <0.0001) were found for SPBB and VAS. CONCLUSIONS These findings show that a six months APA program in elder patients with osteoarthritis improves physical function, reduces pain intensity and decreases the risk of institutionalization. Moreover the positive outcome of APA we found in elder patients with osteoarthritis suggests a more frequent use of such rehabilitation approach, also evaluating its economic impact on this disease.
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Affiliation(s)
- L Panella
- Department of Rehabilitation, ASST Pini-CTO Hospital, Milan
| | - C Incorvaia
- Cardiac/Pulmonary Rehabilitation, ASST Pini-CTO, Milan
| | - A V Caserta
- Department of Rehabilitation, ASST Pini-CTO Hospital, Milan
| | - O Amata
- Department of Rehabilitation, ASST Pini-CTO Hospital, Milan
| | - D Consonni
- Epidemiology Unit, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan
| | - L Pessina
- Cardiac/Pulmonary Rehabilitation, ASST Pini-CTO, Milan
| | - G Leo
- Pediatric Allergy and Respiratory Pathophysiology Unit, Department of Pediatrics, Buzzi Children's Hospital, Milan
| | - I Caselli
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Varese, Italy
| | - C Callegari
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Varese, Italy
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7
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Pagani R, Gasparini A, Ielmini M, Caselli I, Poloni N, Ferrari M, Marino F, Callegari C. Twenty years of Lithium pharmacogenetics: A systematic review. Psychiatry Res 2019; 278:42-50. [PMID: 31146140 DOI: 10.1016/j.psychres.2019.05.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 01/31/2023]
Abstract
Lithium is among the best proven treatments for patients diagnosed with Bipolar Disorder, however response to Lithium appears to be considerably variable among individuals and it has been suggested that this inconstancy in Lithium response could be genetically determined. Starting from this perspective, in the last few decades, a number of pharmacogenetic studies have attempted to identify genetic variants, which might be associated with response to Lithium in bipolar patients, in order to develop a pharmacogenetics test to tailor treatment on patients, identifying who will benefit the most from therapy with Lithium. Within this context, authors have critically reviewed pharmacogenetic studies of Lithium response in bipolar disorder, suggesting strategies for future work in this field. Computerized searches of PubMed and Embase databases, for studies published between 1998 and January 2018, was performed: 1162 studies were identified but only 37 relevant papers were selected for detailed review. Despite some interesting preliminary findings, the pharmacogenetics of Lithium and the development of a specific pharmacogenetics test in bipolar disorder appears to be a field still in its infancy, even though the advent of genome-wide association studies holds particular promise for future studies, which should include larger samples.
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Affiliation(s)
- R Pagani
- Clinica Santa Croce, Orselina, Switzerland
| | - A Gasparini
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Viale Borri 57, 2100 Varese, Italy
| | - M Ielmini
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Viale Borri 57, 2100 Varese, Italy
| | - I Caselli
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Viale Borri 57, 2100 Varese, Italy
| | - N Poloni
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Viale Borri 57, 2100 Varese, Italy
| | - M Ferrari
- Department of Clinical Medicine, Division of Experimental and Clinical Pharmacology, University of Insubria, Varese, Italy
| | - F Marino
- Department of Clinical Medicine, Division of Experimental and Clinical Pharmacology, University of Insubria, Varese, Italy
| | - C Callegari
- Department of Medicine and Surgery, Division of Psychiatry, University of Insubria, Viale Borri 57, 2100 Varese, Italy.
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8
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LaForge AC, Michiels R, Bohlen M, Callegari C, Clark A, von Conta A, Coreno M, Di Fraia M, Drabbels M, Huppert M, Finetti P, Ma J, Mudrich M, Oliver V, Plekan O, Prince KC, Shcherbinin M, Stranges S, Svoboda V, Wörner HJ, Stienkemeier F. Real-Time Dynamics of the Formation of Hydrated Electrons upon Irradiation of Water Clusters with Extreme Ultraviolet Light. Phys Rev Lett 2019; 122:133001. [PMID: 31012607 DOI: 10.1103/physrevlett.122.133001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Indexed: 06/09/2023]
Abstract
Free electrons in a polar liquid can form a bound state via interaction with the molecular environment. This so-called hydrated electron state in water is of fundamental importance, e.g., in cellular biology or radiation chemistry. Hydrated electrons are highly reactive radicals that can either directly interact with DNA or enzymes, or form highly excited hydrogen (H^{*}) after being captured by protons. Here, we investigate the formation of the hydrated electron in real-time employing extreme ultraviolet femtosecond pulses from a free electron laser, in this way observing the initial steps of the hydration process. Using time-resolved photoelectron spectroscopy we find formation timescales in the low picosecond range and resolve the prominent dynamics of forming excited hydrogen states.
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Affiliation(s)
- A C LaForge
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - R Michiels
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - M Bohlen
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - A Clark
- Laboratory of Molecular Nanodynamics, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - A von Conta
- Laboratorium für Physikalische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - M Coreno
- ISM-CNR, Istituto di Struttura della Materia, LD2 Unit, 34149 Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - M Drabbels
- Laboratory of Molecular Nanodynamics, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - M Huppert
- Laboratorium für Physikalische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - P Finetti
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - J Ma
- Laboratorium für Physikalische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - M Mudrich
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - V Oliver
- Laboratory of Molecular Nanodynamics, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - O Plekan
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - M Shcherbinin
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - S Stranges
- Department of Chemistry and Drug Technologies, University Sapienza, 00185 Rome, Italy, and Tasc IOM-CNR, Basovizza, Trieste, Italy
| | - V Svoboda
- Laboratorium für Physikalische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - H J Wörner
- Laboratorium für Physikalische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - F Stienkemeier
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Institute of Advanced Studies (FRIAS), University of Freiburg, 79104 Freiburg, Germany
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9
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Ilchen M, Hartmann G, Gryzlova EV, Achner A, Allaria E, Beckmann A, Braune M, Buck J, Callegari C, Coffee RN, Cucini R, Danailov M, De Fanis A, Demidovich A, Ferrari E, Finetti P, Glaser L, Knie A, Lindahl AO, Plekan O, Mahne N, Mazza T, Raimondi L, Roussel E, Scholz F, Seltmann J, Shevchuk I, Svetina C, Walter P, Zangrando M, Viefhaus J, Grum-Grzhimailo AN, Meyer M. Symmetry breakdown of electron emission in extreme ultraviolet photoionization of argon. Nat Commun 2018; 9:4659. [PMID: 30405105 PMCID: PMC6220192 DOI: 10.1038/s41467-018-07152-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 10/16/2018] [Indexed: 11/09/2022] Open
Abstract
Short wavelength free-electron lasers (FELs), providing pulses of ultrahigh photon intensity, have revolutionized spectroscopy on ionic targets. Their exceptional photon flux enables multiple photon absorptions within a single femtosecond pulse, which in turn allows for deep insights into the photoionization process itself as well as into evolving ionic states of a target. Here we employ ultraintense pulses from the FEL FERMI to spectroscopically investigate the sequential emission of electrons from gaseous, atomic argon in the neutral as well as the ionic ground state. A pronounced forward-backward symmetry breaking of the angularly resolved emission patterns with respect to the light propagation direction is experimentally observed and theoretically explained for the region of the Cooper minimum, where the asymmetry of electron emission is strongly enhanced. These findings aim to originate a better understanding of the fundamentals of photon momentum transfer in ionic matter.
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Affiliation(s)
- M Ilchen
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany. .,Institut für Physik, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany.
| | - G Hartmann
- Institut für Physik, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany.,Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - E V Gryzlova
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - A Achner
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - E Allaria
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - A Beckmann
- X-Spectrum GmbH, Notkestraße 85, 22607, Hamburg, Germany
| | - M Braune
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - J Buck
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.,Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - R N Coffee
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R Cucini
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - M Danailov
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - A De Fanis
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - A Demidovich
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - E Ferrari
- Particle Accelerator Physics Laboratory, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - P Finetti
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - L Glaser
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - A Knie
- Institut für Physik, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - A O Lindahl
- Qamcom Research & Technology AB, Falkenbergsgatan 3, SE-412 85, Gothenburg, Sweden
| | - O Plekan
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - N Mahne
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - T Mazza
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - L Raimondi
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - E Roussel
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy
| | - F Scholz
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - J Seltmann
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - I Shevchuk
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - C Svetina
- Paul Scherrer Institut, 5232, Villingen PSI, Switzerland
| | - P Walter
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany.,SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - M Zangrando
- Elettra-Sincrotrone Trieste SCpA, I-34149, Trieste, Italy.,CNR, IOM, Lab Nazl TASC, I-34149, Trieste, Italy
| | - J Viefhaus
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607, Hamburg, Germany
| | - A N Grum-Grzhimailo
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.,Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - M Meyer
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
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10
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Holzmeier F, Bello RY, Hervé M, Achner A, Baumann TM, Meyer M, Finetti P, Di Fraia M, Gauthier D, Roussel E, Plekan O, Richter R, Prince KC, Callegari C, Bachau H, Palacios A, Martín F, Dowek D. Control of H_{2} Dissociative Ionization in the Nonlinear Regime Using Vacuum Ultraviolet Free-Electron Laser Pulses. Phys Rev Lett 2018; 121:103002. [PMID: 30240272 DOI: 10.1103/physrevlett.121.103002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Indexed: 06/08/2023]
Abstract
The role of the nuclear degrees of freedom in nonlinear two-photon single ionization of H_{2} molecules interacting with short and intense vacuum ultraviolet pulses is investigated, both experimentally and theoretically, by selecting single resonant vibronic intermediate neutral states. This high selectivity relies on the narrow bandwidth and tunability of the pulses generated at the FERMI free-electron laser. A sustained enhancement of dissociative ionization, which even exceeds nondissociative ionization, is observed and controlled as one selects progressively higher vibronic states. With the help of ab initio calculations for increasing pulse durations, the photoelectron and ion energy spectra obtained with velocity map imaging allow us to identify new photoionization pathways. With pulses of the order of 100 fs, the experiment probes a timescale that lies between that of ultrafast dynamical processes and that of steady state excitations.
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Affiliation(s)
- F Holzmeier
- Institut des Sciences Moléculaires d'Orsay CNRS, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
- Synchrotron SOLEIL, 91192 Gif-sur-Yvette, France
| | - R Y Bello
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - M Hervé
- Institut des Sciences Moléculaires d'Orsay CNRS, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - A Achner
- European XFEL GmbH, 22869 Schenefeld, Germany
| | - T M Baumann
- European XFEL GmbH, 22869 Schenefeld, Germany
| | - M Meyer
- European XFEL GmbH, 22869 Schenefeld, Germany
| | - P Finetti
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - D Gauthier
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - E Roussel
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - R Richter
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - C Callegari
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - H Bachau
- Centre des Lasers Intenses et Applications (UMR 5107 du CNRS-CEA-Université de Bordeaux), 351 Cours de la Libération, 33405 Talence cedex, France
| | - A Palacios
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - F Martín
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Cantoblanco, 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - D Dowek
- Institut des Sciences Moléculaires d'Orsay CNRS, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
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11
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Squibb RJ, Sapunar M, Ponzi A, Richter R, Kivimäki A, Plekan O, Finetti P, Sisourat N, Zhaunerchyk V, Marchenko T, Journel L, Guillemin R, Cucini R, Coreno M, Grazioli C, Di Fraia M, Callegari C, Prince KC, Decleva P, Simon M, Eland JHD, Došlić N, Feifel R, Piancastelli MN. Acetylacetone photodynamics at a seeded free-electron laser. Nat Commun 2018; 9:63. [PMID: 29302026 PMCID: PMC5754354 DOI: 10.1038/s41467-017-02478-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 12/04/2017] [Indexed: 11/30/2022] Open
Abstract
The first steps in photochemical processes, such as photosynthesis or animal vision, involve changes in electronic and geometric structure on extremely short time scales. Time-resolved photoelectron spectroscopy is a natural way to measure such changes, but has been hindered hitherto by limitations of available pulsed light sources in the vacuum-ultraviolet and soft X-ray spectral region, which have insufficient resolution in time and energy simultaneously. The unique combination of intensity, energy resolution, and femtosecond pulse duration of the FERMI-seeded free-electron laser can now provide exceptionally detailed information on photoexcitation–deexcitation and fragmentation in pump-probe experiments on the 50-femtosecond time scale. For the prototypical system acetylacetone we report here electron spectra measured as a function of time delay with enough spectral and time resolution to follow several photoexcited species through well-characterized individual steps, interpreted using state-of-the-art static and dynamics calculations. These results open the way for investigations of photochemical processes in unprecedented detail. The first steps in photochemical processes involve changes in electronic and geometric structure on extremely short timescales. Here, the authors report femtosecond dynamics in prototypical acetylacetone, by pump-probe photoexcitation-photoemission experiments and static and dynamics calculations.
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Affiliation(s)
- R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - M Sapunar
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - A Ponzi
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - R Richter
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - A Kivimäki
- Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali, 34149, Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - N Sisourat
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - V Zhaunerchyk
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - T Marchenko
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - L Journel
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - R Guillemin
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - R Cucini
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - M Coreno
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - C Grazioli
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - C Callegari
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Molecular Model Discovery Laboratory, Department of Chemistry and Biotechnology, Swinburne University of Technology, Melbourne, VIC, 3122, Australia
| | - P Decleva
- Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali, 34149, Trieste, Italy.,Dipartimento di Scienze Chimiche e Farmaceutiche, Universitá di Trieste, 34127, Trieste, Italy
| | - M Simon
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK
| | - N Došlić
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - M N Piancastelli
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France. .,Department of Physics and Astronomy, Uppsala University, SE-751 20, Uppsala, Sweden.
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12
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Iablonskyi D, Ueda K, Ishikawa KL, Kheifets AS, Carpeggiani P, Reduzzi M, Ahmadi H, Comby A, Sansone G, Csizmadia T, Kuehn S, Ovcharenko E, Mazza T, Meyer M, Fischer A, Callegari C, Plekan O, Finetti P, Allaria E, Ferrari E, Roussel E, Gauthier D, Giannessi L, Prince KC. Observation and Control of Laser-Enabled Auger Decay. Phys Rev Lett 2017; 119:073203. [PMID: 28949652 DOI: 10.1103/physrevlett.119.073203] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Indexed: 06/07/2023]
Abstract
Single-photon laser-enabled Auger decay (spLEAD) is predicted theoretically [B. Cooper and V. Averbukh, Phys. Rev. Lett. 111, 083004 (2013)PRLTAO0031-900710.1103/PhysRevLett.111.083004] and here we report its first experimental observation in neon. Using coherent, bichromatic free-electron laser pulses, we detect the process and coherently control the angular distribution of the emitted electrons by varying the phase difference between the two laser fields. Since spLEAD is highly sensitive to electron correlation, this is a promising method for probing both correlation and ultrafast hole migration in more complex systems.
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Affiliation(s)
- D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - K L Ishikawa
- Department of Nuclear Engineering and Management, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Photon Science Center, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - A S Kheifets
- Research School of Physics and Engineering, Australian National University, Canberra, ACT 2601, Australia
| | - P Carpeggiani
- Dipartimento di Fisica, CNR-IFN, Politecnico di Milano, 20133 Milan, Italy
| | - M Reduzzi
- Dipartimento di Fisica, CNR-IFN, Politecnico di Milano, 20133 Milan, Italy
| | - H Ahmadi
- Dipartimento di Fisica, CNR-IFN, Politecnico di Milano, 20133 Milan, Italy
| | - A Comby
- Dipartimento di Fisica, CNR-IFN, Politecnico di Milano, 20133 Milan, Italy
| | - G Sansone
- Dipartimento di Fisica, CNR-IFN, Politecnico di Milano, 20133 Milan, Italy
- Physikalisches Institut der Albert-Ludwigs-Universitat, 79104 Freiburg, Germany
| | - T Csizmadia
- ELI-ALPS, Pintér József utca, 6728 Szeged, Hungary
| | - S Kuehn
- ELI-ALPS, Pintér József utca, 6728 Szeged, Hungary
| | | | - T Mazza
- European XFEL GmbH, 22869 Schenefeld, Germany
| | - M Meyer
- European XFEL GmbH, 22869 Schenefeld, Germany
| | - A Fischer
- Max Planck Institute for Nuclear Physics, Heidelberg 69117, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - E Allaria
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - E Ferrari
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - E Roussel
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - D Gauthier
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - L Giannessi
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- ENEA C.R. Frascati, 00044 Frascati, Rome, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Molecular Model Discovery Laboratory, Department of Chemistry and Biotechnology, Swinburne University of Technology, Melbourne 3122, Australia
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13
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Takanashi T, Golubev NV, Callegari C, Fukuzawa H, Motomura K, Iablonskyi D, Kumagai Y, Mondal S, Tachibana T, Nagaya K, Nishiyama T, Matsunami K, Johnsson P, Piseri P, Sansone G, Dubrouil A, Reduzzi M, Carpeggiani P, Vozzi C, Devetta M, Negro M, Faccialà D, Calegari F, Trabattoni A, Castrovilli MC, Ovcharenko Y, Mudrich M, Stienkemeier F, Coreno M, Alagia M, Schütte B, Berrah N, Plekan O, Finetti P, Spezzani C, Ferrari E, Allaria E, Penco G, Serpico C, De Ninno G, Diviacco B, Di Mitri S, Giannessi L, Jabbari G, Prince KC, Cederbaum LS, Demekhin PV, Kuleff AI, Ueda K. Time-Resolved Measurement of Interatomic Coulombic Decay Induced by Two-Photon Double Excitation of Ne_{2}. Phys Rev Lett 2017; 118:033202. [PMID: 28157370 DOI: 10.1103/physrevlett.118.033202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Indexed: 06/06/2023]
Abstract
The hitherto unexplored two-photon doubly excited states [Ne^{*}(2p^{-1}3s)]_{2} were experimentally identified using the seeded, fully coherent, intense extreme ultraviolet free-electron laser FERMI. These states undergo ultrafast interatomic Coulombic decay (ICD), which predominantly produces singly ionized dimers. In order to obtain the rate of ICD, the resulting yield of Ne_{2}^{+} ions was recorded as a function of delay between the extreme ultraviolet pump and UV probe laser pulses. The extracted lifetimes of the long-lived doubly excited states, 390(-130/+450) fs, and of the short-lived ones, less than 150 fs, are in good agreement with ab initio quantum mechanical calculations.
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Affiliation(s)
- T Takanashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - N V Golubev
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - H Fukuzawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Motomura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - Y Kumagai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Mondal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Tachibana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Nagaya
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - K Matsunami
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - P Johnsson
- Department of Physics, Lund University, P.O. Box 118, 22100 Lund, Sweden
| | - P Piseri
- CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
| | - G Sansone
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Physikalisches Institut Albert-Ludwigs-Universität, Stefan-Meier-Strasse 19 79104 Freiburg, Germany
| | - A Dubrouil
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - M Reduzzi
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - P Carpeggiani
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - C Vozzi
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - M Devetta
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - M Negro
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - D Faccialà
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - F Calegari
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Center for Free-Electron Laser Science, DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - A Trabattoni
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Center for Free-Electron Laser Science, DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - Y Ovcharenko
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany
| | - M Mudrich
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - F Stienkemeier
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - M Coreno
- CNR-ISM, Area Science Park, 34149 Basovizza, Trieste, Italy
| | - M Alagia
- CNR-IOM, Area Science Park, 34149 Basovizza, Trieste, Italy
| | - B Schütte
- Max-Born-Institut, Max-Born-Strasse 2 A, 12489 Berlin, Germany
| | - N Berrah
- Department of Physics, University of Connecticut, 2152 Hillside Road, Storrs, Connecticut 06269, USA
| | - O Plekan
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - C Spezzani
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - E Ferrari
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - E Allaria
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - G Penco
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - C Serpico
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - G De Ninno
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia
| | - B Diviacco
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - S Di Mitri
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - L Giannessi
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - G Jabbari
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - K C Prince
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
- CNR-IOM, Area Science Park, 34149 Basovizza, Trieste, Italy
| | - L S Cederbaum
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Ph V Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - A I Kuleff
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
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14
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Ilchen M, Douguet N, Mazza T, Rafipoor AJ, Callegari C, Finetti P, Plekan O, Prince KC, Demidovich A, Grazioli C, Avaldi L, Bolognesi P, Coreno M, Di Fraia M, Devetta M, Ovcharenko Y, Düsterer S, Ueda K, Bartschat K, Grum-Grzhimailo AN, Bozhevolnov AV, Kazansky AK, Kabachnik NM, Meyer M. Circular Dichroism in Multiphoton Ionization of Resonantly Excited He^{+} Ions. Phys Rev Lett 2017; 118:013002. [PMID: 28106422 DOI: 10.1103/physrevlett.118.013002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Indexed: 06/06/2023]
Abstract
Intense, circularly polarized extreme-ultraviolet and near-infrared (NIR) laser pulses are combined to double ionize atomic helium via the oriented intermediate He^{+}(3p) resonance state. Applying angle-resolved electron spectroscopy, we find a large photon helicity dependence of the spectrum and the angular distribution of the electrons ejected from the resonance by NIR multiphoton absorption. The measured circular dichroism is unexpectedly found to vary strongly as a function of the NIR intensity. The experimental data are well described by theoretical modeling and possible mechanisms are discussed.
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Affiliation(s)
- M Ilchen
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld Hamburg, Germany
- PULSE at Stanford, 2575 Sand Hill Road, Menlo Park, 94025 California, USA
| | - N Douguet
- Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311, USA
| | - T Mazza
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld Hamburg, Germany
| | - A J Rafipoor
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld Hamburg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste, I-34149 Basovizza, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, I-34149 Basovizza, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, I-34149 Basovizza, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, I-34149 Basovizza, Italy
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, Area Science Park, I-34149 Trieste, Italy
- Molecular Model Discovery Laboratory, Department of Chemistry and Biotechnology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
| | - A Demidovich
- Elettra-Sincrotrone Trieste, I-34149 Basovizza, Italy
| | - C Grazioli
- Elettra-Sincrotrone Trieste, I-34149 Basovizza, Italy
| | - L Avaldi
- CNR Istituto Struttura della Materia, Via del Fosso del Cavaliere, 100-00133 Roma, Italy
| | - P Bolognesi
- CNR Istituto Struttura della Materia, Via del Fosso del Cavaliere, 100-00133 Roma, Italy
| | - M Coreno
- CNR Istituto Struttura della Materia, Via del Fosso del Cavaliere, 100-00133 Roma, Italy
| | - M Di Fraia
- Department of Physics, University of Trieste, I-34128 Trieste, Italy
| | - M Devetta
- Istituto di fotonica e nanotecnologie CNR-IFN, 20133 Milano, Italy
| | - Y Ovcharenko
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld Hamburg, Germany
| | - S Düsterer
- Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, D-22603 Hamburg, Germany
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - K Bartschat
- Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311, USA
| | - A N Grum-Grzhimailo
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld Hamburg, Germany
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
| | - A V Bozhevolnov
- Sankt Petersburg State University, Universitetskaya nab. 7/9, Sankt Petersburg 199164, Russia
| | - A K Kazansky
- Departamento de Fisica de Materiales, UPV/EHU, E-20018 San Sebastian/Donostia, Spain
- IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain
- Donostia International Physics Center (DIPC), E-20018 San Sebastian/Donostia, Spain
| | - N M Kabachnik
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld Hamburg, Germany
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- Donostia International Physics Center (DIPC), E-20018 San Sebastian/Donostia, Spain
| | - M Meyer
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld Hamburg, Germany
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15
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Iablonskyi D, Nagaya K, Fukuzawa H, Motomura K, Kumagai Y, Mondal S, Tachibana T, Takanashi T, Nishiyama T, Matsunami K, Johnsson P, Piseri P, Sansone G, Dubrouil A, Reduzzi M, Carpeggiani P, Vozzi C, Devetta M, Negro M, Calegari F, Trabattoni A, Castrovilli MC, Faccialà D, Ovcharenko Y, Möller T, Mudrich M, Stienkemeier F, Coreno M, Alagia M, Schütte B, Berrah N, Kuleff AI, Jabbari G, Callegari C, Plekan O, Finetti P, Spezzani C, Ferrari E, Allaria E, Penco G, Serpico C, De Ninno G, Nikolov I, Diviacco B, Di Mitri S, Giannessi L, Prince KC, Ueda K. Slow Interatomic Coulombic Decay of Multiply Excited Neon Clusters. Phys Rev Lett 2016; 117:276806. [PMID: 28084773 DOI: 10.1103/physrevlett.117.276806] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Indexed: 06/06/2023]
Abstract
Ne clusters (∼5000 atoms) were resonantly excited (2p→3s) by intense free electron laser (FEL) radiation at FERMI. Such multiply excited clusters can decay nonradiatively via energy exchange between at least two neighboring excited atoms. Benefiting from the precise tunability and narrow bandwidth of seeded FEL radiation, specific sites of the Ne clusters were probed. We found that the relaxation of cluster surface atoms proceeds via a sequence of interatomic or intermolecular Coulombic decay (ICD) processes while ICD of bulk atoms is additionally affected by the surrounding excited medium via inelastic electron scattering. For both cases, cluster excitations relax to atomic states prior to ICD, showing that this kind of ICD is rather slow (picosecond range). Controlling the average number of excitations per cluster via the FEL intensity allows a coarse tuning of the ICD rate.
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Affiliation(s)
- D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Nagaya
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - H Fukuzawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Motomura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - Y Kumagai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Mondal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Tachibana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Takanashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - K Matsunami
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - P Johnsson
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - P Piseri
- Dipartimento di Fisica, Università degli Studi di Milano, 20133 Milano, Italy
| | - G Sansone
- CNR-IFN, 20133 Milan, Italy
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | | | | | | | | | | | | | - F Calegari
- CNR-IFN, 20133 Milan, Italy
- Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
| | - A Trabattoni
- CNR-IFN, 20133 Milan, Italy
- Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
| | | | - D Faccialà
- Dipartimento di Fisica, Politecnico di Milano, 20133 Milan, Italy
| | - Y Ovcharenko
- Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany
| | - T Möller
- Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany
| | - M Mudrich
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - F Stienkemeier
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - M Coreno
- CNR-ISM, Area Science Park, 34149 Trieste, Italy
| | - M Alagia
- CNR-IOM, Area Science Park, 34149 Trieste, Italy
| | - B Schütte
- Max-Born-Institut, 12489 Berlin, Germany
| | - N Berrah
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - A I Kuleff
- Theoretische Chemie, Universität Heidelberg, 69120 Heidelberg, Germany
| | - G Jabbari
- Theoretische Chemie, Universität Heidelberg, 69120 Heidelberg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - C Spezzani
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - E Ferrari
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - E Allaria
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - G Penco
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - C Serpico
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - G De Ninno
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia
| | - I Nikolov
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - B Diviacco
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - S Di Mitri
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - L Giannessi
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - K C Prince
- CNR-IOM, Area Science Park, 34149 Trieste, Italy
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
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16
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Nagaya K, Iablonskyi D, Golubev NV, Matsunami K, Fukuzawa H, Motomura K, Nishiyama T, Sakai T, Tachibana T, Mondal S, Wada S, Prince KC, Callegari C, Miron C, Saito N, Yabashi M, Demekhin PV, Cederbaum LS, Kuleff AI, Yao M, Ueda K. Interatomic Coulombic decay cascades in multiply excited neon clusters. Nat Commun 2016; 7:13477. [PMID: 27917867 PMCID: PMC5150215 DOI: 10.1038/ncomms13477] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 10/07/2016] [Indexed: 11/21/2022] Open
Abstract
In high-intensity laser light, matter can be ionized by direct multiphoton absorption even at photon energies below the ionization threshold. However on tuning the laser to the lowest resonant transition, the system becomes multiply excited, and more efficient, indirect ionization pathways become operative. These mechanisms are known as interatomic Coulombic decay (ICD), where one of the species de-excites to its ground state, transferring its energy to ionize another excited species. Here we show that on tuning to a higher resonant transition, a previously unknown type of interatomic Coulombic decay, intra-Rydberg ICD occurs. In it, de-excitation of an atom to a close-lying Rydberg state leads to electron emission from another neighbouring Rydberg atom. Moreover, systems multiply excited to higher Rydberg states will decay by a cascade of such processes, producing even more ions. The intra-Rydberg ICD and cascades are expected to be ubiquitous in weakly-bound systems exposed to high-intensity resonant radiation. Interatomic Coulombic decay (ICD) is a relaxation of an atom in a weakly bound environment by the transfer of excess energy to ionize the neighbouring atom. Here the authors observe intra-Rydberg ICD in neon clusters, which is a decay that involves the ionization of Rydberg atoms in the cluster.
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Affiliation(s)
- K Nagaya
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.,RIKEN SPring-8 Center, 679-5148 Hyogo, Japan
| | - D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - N V Golubev
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - K Matsunami
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - H Fukuzawa
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Motomura
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Sakai
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Tachibana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Mondal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Wada
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Department of Physical Science, Hiroshima University, 739-8526 Higashi-Hiroshima, Japan
| | - K C Prince
- Elettra-Sincrotrone Trieste, Basovizza, Trieste I-34149, Italy
| | - C Callegari
- Elettra-Sincrotrone Trieste, Basovizza, Trieste I-34149, Italy
| | - C Miron
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France.,Extreme Light Infrastructure-Nuclear Physics (ELI-NP), 'Horia Hulubei' National Institute for Physics and Nuclear Engineering, RO-077125 Măgurele, Jud. Ilfov, Romania
| | - N Saito
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,National Metrology Institute of Japan, AIST, 305-8568 Tsukuba, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan
| | - Ph V Demekhin
- Theoretische Atom- und Molekülphysik, Institut für Physik und CINSaT, Universität Kassel, D-34132 Kassel, Germany
| | - L S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - A I Kuleff
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - M Yao
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.,Deceased
| | - K Ueda
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
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17
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Žitnik M, Mihelič A, Bučar K, Kavčič M, Rubensson JE, Svanquist M, Söderström J, Feifel R, Såthe C, Ovcharenko Y, Lyamayev V, Mazza T, Meyer M, Simon M, Journel L, Lüning J, Plekan O, Coreno M, Devetta M, Di Fraia M, Finetti P, Richter R, Grazioli C, Prince KC, Callegari C. High resolution multiphoton spectroscopy by a tunable free-electron-laser light. Phys Rev Lett 2014; 113:193201. [PMID: 25415905 DOI: 10.1103/physrevlett.113.193201] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Indexed: 06/04/2023]
Abstract
Seeded free electron lasers theoretically have the intensity, tunability, and resolution required for multiphoton spectroscopy of atomic and molecular species. Using the seeded free electron laser FERMI and a novel detection scheme, we have revealed the two-photon excitation spectra of dipole-forbidden doubly excited states in helium. The spectral profiles of the lowest (-1,0)(+1) (1)S(e) and (0,1)(0) (1)D(e) resonances display energy shifts in the meV range that depend on the pulse intensity. The results are explained by an effective two-level model based on calculated Rabi frequencies and decay rates.
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Affiliation(s)
- M Žitnik
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia and Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
| | - A Mihelič
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - K Bučar
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - M Kavčič
- Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - J-E Rubensson
- Uppsala University, Department of Physics and Astronomy, P.O. Box 530, S-75121 Uppsala, Sweden
| | - M Svanquist
- Uppsala University, Department of Physics and Astronomy, P.O. Box 530, S-75121 Uppsala, Sweden
| | - J Söderström
- Uppsala University, Department of Physics and Astronomy, P.O. Box 530, S-75121 Uppsala, Sweden
| | - R Feifel
- Uppsala University, Department of Physics and Astronomy, P.O. Box 530, S-75121 Uppsala, Sweden and University of Gothenburg, Department of Physics, SE-412 96 Gothenburg, Sweden
| | - C Såthe
- MAX IV Laboratory, Lund University, P.O. Box 118, 22100 Lund, Sweden
| | - Y Ovcharenko
- Technische Universität Berlin, Institut für Optik und Atomare Physik, Eugene-Wigner-Building Hardenbergstrasse 36, D-10623 Berlin, Germany
| | - V Lyamayev
- Institute of Physics, University of Freiburg, Hermann-Herder Strasse 3a, D-79104 Freiburg, Germany
| | - T Mazza
- European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
| | - M Meyer
- European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
| | - M Simon
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France and CNRS, UMR 7614, LCPMR, 75005 Paris, France
| | - L Journel
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France and CNRS, UMR 7614, LCPMR, 75005 Paris, France
| | - J Lüning
- Sorbonne Université, UPMC Univ Paris 06, UMR 7614, LCPMR, 75005 Paris, France and CNRS, UMR 7614, LCPMR, 75005 Paris, France
| | - O Plekan
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy
| | - M Coreno
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy
| | - M Devetta
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy
| | - M Di Fraia
- Department of Physics, University of Trieste, Via Valerio 2, I-34124 Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy
| | - R Richter
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy
| | - C Grazioli
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy and eChemistry Laboratory, Faculty of Life and Social Sciences, Swinburne University of Technology, Hawthorn, Melbourne, Victoria 3122, Australia
| | - C Callegari
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163, 5, I-34149 Basovizza, Trieste, Italy
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18
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Callegari C, Palermo G, Greco M, Corrente M, Piseddu E, Auriemma E, Zini E. Pneumonia associated with Salmonella spp. infection in a cat receiving cyclosporine. SCHWEIZ ARCH TIERH 2014; 156:499-503. [DOI: 10.1024/0036-7281/a000637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Mazza T, Ilchen M, Rafipoor AJ, Callegari C, Finetti P, Plekan O, Prince KC, Richter R, Danailov MB, Demidovich A, De Ninno G, Grazioli C, Ivanov R, Mahne N, Raimondi L, Svetina C, Avaldi L, Bolognesi P, Coreno M, O'Keeffe P, Di Fraia M, Devetta M, Ovcharenko Y, Möller T, Lyamayev V, Stienkemeier F, Düsterer S, Ueda K, Costello JT, Kazansky AK, Kabachnik NM, Meyer M. Determining the polarization state of an extreme ultraviolet free-electron laser beam using atomic circular dichroism. Nat Commun 2014; 5:3648. [DOI: 10.1038/ncomms4648] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 03/14/2014] [Indexed: 11/09/2022] Open
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20
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Ovcharenko Y, Lyamayev V, Katzy R, Devetta M, LaForge A, O'Keeffe P, Plekan O, Finetti P, Di Fraia M, Mudrich M, Krikunova M, Piseri P, Coreno M, Brauer NB, Mazza T, Stranges S, Grazioli C, Richter R, Prince KC, Drabbels M, Callegari C, Stienkemeier F, Möller T. Novel collective autoionization process observed in electron spectra of He clusters. Phys Rev Lett 2014; 112:073401. [PMID: 24579595 DOI: 10.1103/physrevlett.112.073401] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Indexed: 06/03/2023]
Abstract
The ionization dynamics of He nanodroplets irradiated with intense femtosecond extreme ultraviolet pulses of up to 1013 W/cm2 power density have been investigated by photoelectron spectroscopy. Helium droplets were resonantly excited to atomiclike 2p states with a photon energy of 21.4 eV, below the ionization potential (Ip), and directly into the ionization continuum with 42.8 eV photons. While electron emission following direct ionization above Ip is well explained within a model based on a sequence of direct electron emission events, the resonant excitation provides evidence of a new, collective ionization mechanism involving many excited atomiclike 2p states. With increasing power density the direct photoline due to an interatomic Coulombic decay disappears. It indicates that ionization occurs due to energy exchange between at least three excited atoms proceeding on a femtosecond time scale. In agreement with recent theoretical work the novel ionization process is very efficient and it is expected to be important for many other systems.
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Affiliation(s)
- Y Ovcharenko
- Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany
| | - V Lyamayev
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - R Katzy
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - M Devetta
- CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, 20133 Milano, Italy
| | - A LaForge
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - P O'Keeffe
- CNR Istituto di Metodologie Inorganiche e dei Plasmi, 00016 Monterotondo Scalo, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy and Department of Physics, University of Trieste, 34128 Trieste, Italy
| | - M Mudrich
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - M Krikunova
- Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany
| | - P Piseri
- CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, 20133 Milano, Italy
| | - M Coreno
- CNR Istituto di Metodologie Inorganiche e dei Plasmi, 00016 Monterotondo Scalo, Italy and Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy
| | - N B Brauer
- Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - T Mazza
- European XFEL GmbH, 22607 Hamburg, Germany
| | - S Stranges
- Dipartimento di Chimica e Tecnologie del Farmaco, Università La Sapienza, 00185 Rome, Italy and IOM-CNR TASC Laboratory, Basovizza, 34149 Trieste, Italy
| | - C Grazioli
- Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy and IOM-CNR TASC Laboratory, Basovizza, 34149 Trieste, Italy and Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34128 Trieste, Italy
| | - R Richter
- Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy and IOM-CNR TASC Laboratory, Basovizza, 34149 Trieste, Italy
| | - M Drabbels
- Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - C Callegari
- Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy
| | - F Stienkemeier
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - T Möller
- Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany
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21
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Grazioli C, Callegari C, Ciavardini A, Coreno M, Frassetto F, Gauthier D, Golob D, Ivanov R, Kivimäki A, Mahieu B, Bučar B, Merhar M, Miotti P, Poletto L, Polo E, Ressel B, Spezzani C, De Ninno G. CITIUS: an infrared-extreme ultraviolet light source for fundamental and applied ultrafast science. Rev Sci Instrum 2014; 85:023104. [PMID: 24593346 DOI: 10.1063/1.4864298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We present the main features of CITIUS, a new light source for ultrafast science, generating tunable, intense, femtosecond pulses in the spectral range from infrared to extreme ultraviolet (XUV). The XUV pulses (about 10(5)-10(8) photons/pulse in the range 14-80 eV) are produced by laser-induced high-order harmonic generation in gas. This radiation is monochromatized by a time-preserving monochromator, also allowing one to work with high-resolution bandwidth selection. The tunable IR-UV pulses (10(12)-10(15) photons/pulse in the range 0.4-5.6 eV) are generated by an optical parametric amplifier, which is driven by a fraction of the same laser pulse that generates high order harmonics. The IR-UV and XUV pulses follow different optical paths and are eventually recombined on the sample for pump-probe experiments. We also present the results of two pump-probe experiments: with the first one, we fully characterized the temporal duration of harmonic pulses in the time-preserving configuration; with the second one, we demonstrated the possibility of using CITIUS for selective investigation of the ultra-fast dynamics of different elements in a magnetic compound.
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Affiliation(s)
- C Grazioli
- Laboratory of Quantum Optics, University of Nova Gorica, Nova Gorica, Slovenia
| | | | | | - M Coreno
- Elettra Sincrotrone Trieste, Trieste, Italy
| | - F Frassetto
- Institute of Photonics and Nanotechnologies (CNR-IFN), Padova, Italy
| | - D Gauthier
- Laboratory of Quantum Optics, University of Nova Gorica, Nova Gorica, Slovenia
| | - D Golob
- Kontrolni Sistemi d.o.o., Sežana, Slovenia
| | - R Ivanov
- Laboratory of Quantum Optics, University of Nova Gorica, Nova Gorica, Slovenia
| | - A Kivimäki
- Institute of Materials Manufacturing (CNR-IOM), TASC Laboratory, Trieste, Italy
| | - B Mahieu
- Elettra Sincrotrone Trieste, Trieste, Italy
| | - B Bučar
- Laboratory of Mechanical Processing Technologies, University of Ljubljana, Ljubljana, Slovenia
| | - M Merhar
- Laboratory of Mechanical Processing Technologies, University of Ljubljana, Ljubljana, Slovenia
| | - P Miotti
- Institute of Photonics and Nanotechnologies (CNR-IFN), Padova, Italy
| | - L Poletto
- Institute of Photonics and Nanotechnologies (CNR-IFN), Padova, Italy
| | - E Polo
- Institute of Organic Synthesis and Photoreactivity (CNR-ISOF), Ferrara, Italy
| | - B Ressel
- Laboratory of Quantum Optics, University of Nova Gorica, Nova Gorica, Slovenia
| | - C Spezzani
- Elettra Sincrotrone Trieste, Trieste, Italy
| | - G De Ninno
- Laboratory of Quantum Optics, University of Nova Gorica, Nova Gorica, Slovenia
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22
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Galgano M, Spalla I, Callegari C, Patruno M, Auriemma E, Zanna G, Ferro S, Zini E. Primary hypothyroidism and thyroid goiter in an adult cat. J Vet Intern Med 2014; 28:682-6. [PMID: 24417675 PMCID: PMC4857985 DOI: 10.1111/jvim.12283] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 09/25/2013] [Accepted: 11/19/2013] [Indexed: 10/26/2022] Open
Affiliation(s)
- M Galgano
- Istituto Veterinario di Novara, Granozzo Con Monticello, Italy
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23
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Buchta D, Krishnan SR, Brauer NB, Drabbels M, O’Keeffe P, Devetta M, Di Fraia M, Callegari C, Richter R, Coreno M, Prince KC, Stienkemeier F, Ullrich J, Moshammer R, Mudrich M. Extreme ultraviolet ionization of pure He nanodroplets: Mass-correlated photoelectron imaging, Penning ionization, and electron energy-loss spectra. J Chem Phys 2013; 139:084301. [DOI: 10.1063/1.4818531] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Alagia M, Callegari C, Candori P, Falcinelli S, Pirani F, Richter R, Stranges S, Vecchiocattivi F. Angular and energy distribution of fragment ions in dissociative double photoionization of acetylene molecules at 39 eV. J Chem Phys 2012; 136:204302. [DOI: 10.1063/1.4720350] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Fechner L, Grüner B, Sieg A, Callegari C, Ancilotto F, Stienkemeier F, Mudrich M. Photoionization and imaging spectroscopy of rubidium atoms attached to helium nanodroplets. Phys Chem Chem Phys 2012; 14:3843-51. [PMID: 22327348 DOI: 10.1039/c2cp22749e] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- L Fechner
- Physikalisches Institut, Universität Freiburg, Freiburg, Germany
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26
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27
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Abstract
Physisorption on solid surfaces is important in both fundamental studies and technology. Adsorbates can also be critical for the performance of miniature electromechanical resonators and sensors. Advances in resonant nanoelectromechanical systems (NEMS), particularly mass sensitivity attaining the single-molecule level, make it possible to probe surface physics in a new regime, where a small number of adatoms cause a detectable frequency shift in a high quality factor (Q) NEMS resonator, and adsorbate fluctuations result in resonance frequency noise. Here we report measurements and analysis of the kinetics and fluctuations of physisorbed xenon (Xe) atoms on a high-Q NEMS resonator vibrating at 190.5 MHz. The measured adsorption spectrum and frequency noise, combined with analytic modeling of surface diffusion and adsorption-desorption processes, suggest that diffusion dominates the observed excess noise. This study also reveals new power laws of frequency noise induced by diffusion, which could be important in other low-dimensional nanoscale systems.
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28
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Auböck G, Nagl J, Callegari C, Ernst WE. Observation of relativistic E⊗e vibronic coupling in Rb3 and K3 quartet states on helium droplets. J Chem Phys 2008; 129:114501. [DOI: 10.1063/1.2976765] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Callegari C, Bortolaso P, Vender S. A single case report of recurrent surgery for chronic back pain and its implications concerning a diagnosis of Münchausen syndrome. Funct Neurol 2006; 21:103-8. [PMID: 16796826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
While undergoing treatment in the psychiatric department, A.C., a 40-year-old white male, who had arrived in the casualty department complaining of an uncontrollable anxiety attack and in a state of fluctuating consciousness, was found to be suffering from a psychopathological condition characterized by pathological lying, gambling, compulsive restlessness, a long clinical history of chronic back pain, with multiple invasive diagnostic investigations and repeated surgery for disc hernia with relative complications, culminating in the fitment of a fixed neurostimulator, a slow-discharge morphine pump and the patient being granted a full disability pension. The continual increases in the doses of morphine suggested a tendency towards drug addiction. After providing a brief overview of the historical background and current concepts relating to the relationship between factitious disorders, malingering and hysteria, the authors discuss the differential diagnosis of the case, suggesting a diagnosis of Münchausen syndrome (the hypothesis best supported by the clinical evidence). This diagnosis, although the subject of much academic debate, is, unfortunately, still not frequently encountered in the medical literature, with the result that even today it has a strong clinical, relational and social impact.
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Affiliation(s)
- C Callegari
- Department of Medicine, University of Insubria, Varese, Italy.
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30
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Abstract
Very high frequency (VHF) nanoelectromechanical systems (NEMS) provide unprecedented sensitivity for inertial mass sensing. We demonstrate in situ measurements in real time with mass noise floor approximately 20 zg. Our best mass resolution corresponds to approximately 7 zg, equivalent to approximately 30 xenon atoms or the mass of an individual 4 kDa molecule. Detailed analysis of the ultimate sensitivity of such devices based on these experimental results indicates that NEMS can ultimately provide inertial mass sensing of individual intact, electrically neutral macromolecules with single-Dalton (1 amu) resolution.
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Affiliation(s)
- Y T Yang
- Kavli Nanoscience Institute, California Institute of Technology, Mail Code 114-36, Pasadena, California 91125, USA
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31
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Callegari C, Conjusteau A, Reinhard I, Lehmann KK, Scoles G. First overtone helium nanodroplet isolation spectroscopy of molecules bearing the acetylenic CH chromophore. J Chem Phys 2000. [DOI: 10.1063/1.1324003] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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32
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Reho J, Higgins J, Callegari C, Lehmann KK, Scoles G. Alkali–helium exciplex formation on the surface of helium nanodroplets. I. Dispersed emission spectroscopy. J Chem Phys 2000. [DOI: 10.1063/1.1321033] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Callegari C, Reinhard I, Lehmann KK, Scoles G, Nauta K, Miller RE. Finite size effects and rotational relaxation in superfluid helium nanodroplets: Microwave-infrared double-resonance spectroscopy of cyanoacetylene. J Chem Phys 2000. [DOI: 10.1063/1.1288604] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Conjusteau A, Callegari C, Reinhard I, Lehmann KK, Scoles G. Microwave spectra of HCN and DCN in [sup 4]He nanodroplets: A test of adiabatic following. J Chem Phys 2000. [DOI: 10.1063/1.1310603] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Higgins J, Callegari C, Reho J, Stienkemeier F, Ernst WE, Gutowski M, Scoles G. Helium Cluster Isolation Spectroscopy of Alkali Dimers in the Triplet Manifold. J Phys Chem A 1998. [DOI: 10.1021/jp981115g] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. Higgins
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - C. Callegari
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - J. Reho
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - F. Stienkemeier
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - W. E. Ernst
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - M. Gutowski
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - G. Scoles
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
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36
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Callegari C, Higgins J, Stienkemeier F, Scoles G. Beam Depletion Spectroscopy of Alkali Atoms (Li, Na, K) Attached to Highly Quantum Clusters. J Phys Chem A 1998. [DOI: 10.1021/jp971176z] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. Callegari
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - J. Higgins
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - F. Stienkemeier
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
| | - G. Scoles
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544
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37
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Bressi C, Taylor G, Parker J, Bressi S, Brambilla V, Aguglia E, Allegranti I, Bongiorno A, Giberti F, Bucca M, Todarello O, Callegari C, Vender S, Gala C, Invernizzi G. Cross validation of the factor structure of the 20-item Toronto Alexithymia Scale: an Italian multicenter study. J Psychosom Res 1996; 41:551-9. [PMID: 9032718 DOI: 10.1016/s0022-3999(96)00228-0] [Citation(s) in RCA: 427] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The 20-item Toronto Alexithymia Scale (TAS-20) has been shown in previous research to measure a general dimension of alexithymia with three intercorrelated factors. This study evaluated the reliability and factorial validity of an Italian translation of the TAS-20 in a group of normal adults (N = 206) and in a mixed group of medical and psychiatric outpatients (N = 642). Using confirmatory factor analyses, the previously established three-factor model of the TAS-20 was found to be replicable in both groups. In addition, the Italian TAS-20 demonstrated adequate estimates of internal reliability and test-retest reliability. Although evaluation of the convergent, discriminant, and concurrent validity of the TAS-20 is required in Italian populations, the present results support the use of the Italian translation of the scale for clinical and research purposes.
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Affiliation(s)
- C Bressi
- IRCCS, Ospedale Maggiore of Milan, Department of Psychiatry, University of Milan, Italy
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38
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Higgins J, Ernst WE, Callegari C, Reho J, Lehmann KK, Scoles G, Gutowski M. Spin Polarized Alkali Clusters: Observation of Quartet States of the Sodium Trimer. Phys Rev Lett 1996; 77:4532-4535. [PMID: 10062562 DOI: 10.1103/physrevlett.77.4532] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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39
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Wang C, Alexander G, Berman N, Salehian B, Davidson T, McDonald V, Steiner B, Hull L, Callegari C, Swerdloff RS. Testosterone replacement therapy improves mood in hypogonadal men--a clinical research center study. J Clin Endocrinol Metab 1996; 81:3578-83. [PMID: 8855804 DOI: 10.1210/jcem.81.10.8855804] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The effect of testosterone (T) replacement on changes in mood was studied for 60 days in 51 hypogonadal men. All patients were withdrawn from their prior T replacement for at least 6 weeks before enrollment. Of these patients, 18 received T enanthate 200 mg im every 20 days, 16 received sublingual T cyclodextrin (SLT) at a dose of 2.5 mg three times daily, and 17 received SLT at a dose of 5.0 mg three times daily. The total treatment period was 60 days. The patients were asked to respond to a questionnaire on 7 consecutive days before the start of treatment and on 7 consecutive days before their visits to the clinic on days 21, 41, and 60 of treatment. The following mood parameters were assessed using a 7-point Likert rating scale: angry, alert, irritable, full of pep (energy), sad/blue, tired, friendly, nervous, and well/good. When compared with the baseline period, T replacement led to significant decreases in anger (P = 0.0045), irritability (P = 0.0009), sadness (P = 0.0033), tiredness (P = 0.0035), and nervousness (P = 0.0291), and significant improvement in energy level (P = 0.0020), friendliness (P = 0.0072), and sense of well-being (P = 0.024) in all subjects as a group. Analyses of the area under the curve (AUC) of baseline serum T levels before T replacement showed significant positive correlations between serum T (AUC) and friendliness (r = 0.29, P < 0.05) and sense of well-being (r = 0.27, P < 0.05), and significant negative correlations with nervousness (r = -0.27, P < 0.05), irritability (r = -0.29, P < 0.05) and tiredness (r = -0.28, P < 0.05). Similar correlations were found between serum dihydrotestosterone (DHT) and some of the mood parameters. After T replacement in the hypogonadal men, these correlations between AUC of serum T levels and the positive and negative mood scores disappeared. These results were corroborated in a subsequent study in which 30 hypogonadal men were supplemented with SLT 5 mg three times daily for 6 months. The patients were less nervous (P = 0.0025) and more alert (P = 0.0004), friendly (P = 0.042), and energetic (P = 0.0001) during the 6-month treatment period compared with baseline. We conclude that T replacement therapy in hypogonadal men improved their positive mood parameters, such as energy, well/good feelings, and friendliness and decreased negative mood parameters including anger, nervousness, and irritability, and direct correlations between serum T and DHT with mood scores were only observed in the baseline period when serum androgen levels were below the normal range. The latter observation suggests that once a minimally adequate serum T/DHT level was achieved by T replacement therapy, further increases in serum T/DHT levels did not further contribute to the improvement in mood variables.
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Affiliation(s)
- C Wang
- Department of Medicine, Harbor-UCLA, Torrance 90509. USA.
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40
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Higgins J, Callegari C, Reho J, Stienkemeier F, Ernst WE, Lehmann KK, Gutowski M, Scoles G. Photoinduced Chemical Dynamics of High-Spin Alkali Trimers. Science 1996; 273:629-31. [PMID: 8662549 DOI: 10.1126/science.273.5275.629] [Citation(s) in RCA: 153] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Nanometer-sized helium droplets, each containing about 10(4) helium atoms, were used as an inert substrate on which to form previously unobserved, spin-3/2 (quartet state) alkali trimers. Dispersed fluorescence measurements reveal that, upon electronic excitation, the quartet trimers undergo intersystem crossing to the doublet manifold, followed by dissociation of the doublet trimer into an atom and a covalently bound singlet dimer. As shown by this work, aggregates of spin-polarized alkali metals represent ideal species for the optical study of fundamental chemical dynamics processes including nonadiabatic spin conversion, change of bonding nature, and unimolecular dissociation.
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Affiliation(s)
- J Higgins
- J. Higgins, C. Callegari, J. Reho, K. K. Lehmann, G. Scoles, Department of Chemistry, Princeton University, Princeton, NJ 08544, USA. F. Stienkemeier, Fakulat fur Physik, Universitat Bielefeld, D-33615, Bielefeld, Germany. W. E. Ernst, Department of Physics, Pennsylvania State University, University Park, PA 16802, USA. M. Gutowski, Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, USA, and Department of Chemistry, University of Gdansk, 80-952 Gdansk, Poland
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41
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Bhasin S, Storer TW, Berman N, Callegari C, Clevenger B, Phillips J, Bunnell TJ, Tricker R, Shirazi A, Casaburi R. The effects of supraphysiologic doses of testosterone on muscle size and strength in normal men. N Engl J Med 1996; 335:1-7. [PMID: 8637535 DOI: 10.1056/nejm199607043350101] [Citation(s) in RCA: 936] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Athletes often take androgenic steroids in an attempt to increase their strength. The efficacy of these substances for this purpose is unsubstantiated, however. METHODS We randomly assigned 43 normal men to one of four groups: placebo with no exercise; testosterone with no exercise; placebo plus exercise; and testosterone plus exercise. The men received injections of 600 mg of testosterone enanthate or placebo weekly for 10 weeks. The men in the exercise groups performed standardized weight-lifting exercises three times weekly. Before and after the treatment period, fat-free mass was determined by underwater weighing, muscle size was measured by magnetic resonance imaging, and the strength of the arms and legs was assessed by bench-press and squatting exercises, respectively. RESULTS Among the men in the no-exercise groups, those given testosterone had greater increases than those given placebo in muscle size in their arms (mean [+/-SE] change in triceps area, 424 +/- 104 vs. -81 +/- 109 square millimeters; P < 0.05) and legs (change in quadriceps area, 607 +/- 123 vs. -131 +/- 111 square millimeters; P < 0.05) and greater increases in strength in the bench-press (9 +/- 4 vs. -1 +/- 1 kg, P < 0.05) and squatting exercises (16 +/- 4 vs. 3 +/- 1 kg, P < 0.05). The men assigned to testosterone and exercise had greater increases in fat-free mass (6.1 +/- 0.6 kg) and muscle size (triceps area, 501 +/- 104 square millimeters; quadriceps area, 1174 +/- 91 square millimeters) than those assigned to either no-exercise group, and greater increases in muscle strength (bench-press strength, 22 +/- 2 kg; squatting-exercise capacity, 38 +/- 4 kg) than either no-exercise group. Neither mood nor behavior was altered in any group. CONCLUSIONS Supraphysiologic doses of testosterone, especially when combined with strength training, increase fat-free mass and muscle size and strength in normal men.
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Affiliation(s)
- S Bhasin
- Department of Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA 90059, USA
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Hohmann H, Callegari C, Furrer S, Grosenick D, Campbell EE, Hertel IV. Photoionization and fragmentation dynamics of C60. Phys Rev Lett 1994; 73:1919-1922. [PMID: 10056922 DOI: 10.1103/physrevlett.73.1919] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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43
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Kolster J, Castro de Kolster C, Quintero M, Callegari C. [HLA, blood group, secretory factor, pepsinogen I, and Helicobacter pylori in duodenal ulcer patients]. G E N 1993; 47:247-56. [PMID: 8050704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Duodenal ulcer is a multifactorial entity where a genetic predisposition and extrinsic elements seem to concur in its origin. A series of genetic and extrinsic markers were determined in 50 patients with duodenal ulcer and 50 controls matched by age, sex and socioeconomical status. HLA antigens dit not have significant differences. Blood group O Rh+ was predominant (p < 0.01). Secretor status of antigen HBO in saliva was positive in 70% of patients (p < 0.001). Serum Pepsinogen I was increased in 85% of cases (p < 0.001). Immunoglobulin G anti H. pylori was positive in 62% of ulcerous (p < 0.001). The highest sensibility and negative predictive value was represented by increased serum pepsinogen levels (85%); the highest specificity and positive predictive value was to Ig G anti H. pylori (90 and 86%). These results affirm the polygenic character of the duodenal ulcer disease.
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Affiliation(s)
- J Kolster
- Departamento de Medicina, Universidad de Carabobo
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44
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Ferrari S, Zolezzi C, Savarino L, Callegari C, Lami F, Puggioli C, Pizzoferrato A, Figus E. [The oral strontium load test in the assessment of intestinal calcium absorption]. Minerva Med 1993; 84:527-31. [PMID: 8247307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A close correlation between calcium and strontium intestinal absorption has been described. In this study, a test using Stable Strontium has been assessed in women without abnormal calcium or bone metabolism, with no history of drugs which might affect calcium or bone metabolism. Decreasing values of Strontium intestinal absorption, according to the length of the postmenopausal period, have been observed. Besides, the Stable Strontium Test has been given in postmenopausal women with osteoporotic femur fractures. In comparison with age matched healthy women, this latter group showed a significantly lower Strontium intestinal absorption. Analogous behaviour has been reported for Calcium intestinal absorption.
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Affiliation(s)
- S Ferrari
- Servizio di Medicina Interna, Istituti Ortopedici Rizzoli, Bologna
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45
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Kolster J, de Kolster CC, Carvajal A, Castro J, González E, Brasel JA, Callegari C. [Urinary epidermal growth factor and serum pepsinogen I in patients with duodenal ulcers]. G E N 1993; 47:16-21. [PMID: 8243967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Absolute and corrected by creatinine excretion urinary Epidermal Growth Factor (EGF) values were determined in 23 duodenal ulcer patients and compared to a control group. Basal serum pepsinogen I levels were measured in the patient group. Absolute urinary EGF values in patients were lower than in control group, such difference however, as such of EGF corrected by urinary creatinine excretion were not statistically significant (p > 0.05). Absolute urinary EGF excretion in male patients was higher than in female patients (p < 0.05), but after establishing the ratio EGF/Creatinine, the difference disappeared. There was no correlation between EGF and Pepsinogen I, it was inverse with age and positive with creatinine excretion. Some mechanisms are considered to explain the urinary EGF normality in these patients. The increasing importance given to EGF in ulcerous diseases and further trends in research are analyzed.
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Affiliation(s)
- J Kolster
- Departamento de Medicina, Pediatría y Farmacología, Universidad de Carabobo
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46
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de Kolster CC, Rapa de Higuera M, Carvajal A, Castro J, Callegari C, Kolster J. [Propranolol in children and adolescents with portal hypertension: its dosage and the clinical, cardiovascular and biochemical effects]. G E N 1992; 46:199-207. [PMID: 1340825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An adequate propranolol dose to reduce 25% the initial heart rate was searched in 19 children with portal hypertension. 13 were pre-hepatic and 6 hepatic hypertension, mean age: 6.96 +/- 3.48 years, range: 2-14 years. Treatment was started with 0.5 mg/kg/day increasing 0.25 mg/kg/day every third day, needing an average of 26 +/- 13 days (range: 6-54 days) to obtain the response. Daily dose ranged from 1 to 5.25 mg/kg/day (mean: 2.69 +/- 1.16). The highest daily dose was 175 mg, the lowest 23.4 mg (mean: 58.27 +/- 36.6 mg/day). Some parameters were evaluated before and after achieving the dose. There was a significant reduction of mean blood pressure (p < 0.01) and peripheral venous pressure (p < 0.05) in 68.4% of patients. A significant elevation (p < 0.001) of 24 hour urinary catecholamine levels occurred in 94.7%. Side effects were minimal. Propranolol could be considered a safe pharmacological option in these patients.
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Affiliation(s)
- C C de Kolster
- Departamento de Pediatría, Universidad de Carabobo, Hospital Central de Valencia
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47
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Kolster J, Castro de Kolster C, Castro J, Carvajal A, Callegari C. [Levels of blood pepsinogen I in the offspring of patients with duodenal ulcer]. G E N 1991; 45:156-62. [PMID: 1843947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Hyperpepsinogenemia I is a reliable subclinical marker of the genetical predisposition to suffer duodenal ulcer. For that reason we determine basal serum pepsinogen I (PG I) levels in 25 ulcerous patients and 75% of their offspring and to a control group matched by age and sex. PG I levels in patients and their offspring were significantly higher than those in controls and their offspring (p < 0.001). By establishing an upper normal value of PG I, we identified a subpopulation of normopepsinogenemic ulcerous patients and another with high values (9 normo PG I: 64.3 +/- 6.2 ng/ml vs 16 ulcerous patients with PG I levels: 142.1 +/- 19 ng/ml) (p < 0.001). Of 16 hyperpepsinogenemic patients, 11 offspring (27%) had increased values, what did not happen to any of the offspring of ulcerous patients with normal PG I or control group finding that 80% of male patients with high PG I gave birth to 1 or 2 children with increased values, suggesting a transmission thorough the male character. So gentic role plays an important place in our ulcerous patients but environmental factors appear to decisively influence on the establishment of the disease.
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Affiliation(s)
- J Kolster
- Departamento de Medicina, Universidad de Carabobo
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Biasco G, Paganelli GM, Brandi G, Brillanti S, Lami F, Callegari C, Gizzi G. Effect of lactobacillus acidophilus and bifidobacterium bifidum on rectal cell kinetics and fecal pH. Ital J Gastroenterol 1991; 23:142. [PMID: 1742509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- G Biasco
- Instituto di Clinica Medica e Gastroenterologia, Università di Bologna, Italy
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Callegari C, Lami F, Levantesi F, Andreacchio AM, Tatali M, Miglioli. M, Gnudi S, Barbara L. Post-menopausal bone density, lactase deficiency and milk consumption. J Hum Nutr Diet 1990. [DOI: 10.1111/j.1365-277x.1990.tb00232.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pironi L, Callegari C, Cornia GL, Lami F, Miglioli M, Barbara L. Lactose malabsorption in adult patients with Crohn's disease. Am J Gastroenterol 1988; 83:1267-71. [PMID: 3189265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In order to evaluate, in adult patients with Crohn's disease (CD), the prevalence of lactose malabsorption and intolerance, and the percentage who can tolerate a physiologic amount of milk in their diet, we tested 37 patients with CD (19 with intestinal resection, and 18 without) and 67 healthy controls (C) with the H2-breath test after they had ingested increasing loads of lactose as 10% solution (12.5 g, 25 g, and 50 g). Patients with malabsorption after the 12.5-g dose were tested further with 250 ml of milk. In the total group of patients and in the subgroup of those with resection, the prevalence of malabsorption was higher than in controls at all lactose loads; in patients who had not undergone resection, no significant difference was observed with the 12.5-g dose. Eleven of 18 patients who were malabsorbers with the 12.5-g dose had malabsorption also with 250 ml milk; however, only three of them (8% of the total group) experienced symptoms of intolerance. We conclude that, in adult patients with CD, 1) the prevalence of lactose malabsorption is increased, 2) in patients who have undergone intestinal resection, malabsorption occurs at a lower dose of the sugar than in patients who did not, and 3) since only 8% of patients experienced symptoms of intolerance after the ingestion of milk 250 ml, this amount can be empirically inserted in the daily diet of an adult with CD.
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Affiliation(s)
- L Pironi
- Clinica Medica I; University of Bologna, Italy
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