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Agner JA, Albert S, Allmendinger P, Hollenstein U, Hugi A, Jouy P, Keppler K, Mangold M, Merkt F, Quack M. High-resolution spectroscopic measurements of cold samples in supersonic beams using a QCL dual-comb spectrometer*. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2094297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Josef A. Agner
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | - Sieghard Albert
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | | | - Urs Hollenstein
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | | | | | - Karen Keppler
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | | | - Frédéric Merkt
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
| | - Martin Quack
- Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland
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Sakemi D, Horikoshi S. Verification of Microwave Effects on Molecular Clusters by Using Supersonic Molecular Jets. J Oleo Sci 2021; 70:1517-1525. [PMID: 34497185 DOI: 10.5650/jos.ess21192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The origin of the specific effect of microwaves on chemical reactions (the microwave effect) was investigated by examining the effect of microwaves on small groups of molecules such as clusters. The origin of the effect was verified by introducing 2.45 GHz microwaves into a system equipped with a supersonic molecular jet and a special microwave feedthrough to record the fluorescence excitation spectrum of molecules. The carrier gas was bubbled through water and introduced into a phenol-filled sample holder to generate phenol-water clusters. Subsequently, it was confirmed that exposure of the phenol-water clusters contained in the molecular jet ejected from the pulse valve to microwave radiation increased the fluorescence derived from the phenol monomer. This is considered to occur because the phenol-water clusters in the molecular jet absorb microwaves and collapse, thereby increasing the abundance of phenol monomers. This result suggests that microwaves affect not only bulk systems but also small groups of molecules, and that local selective heating, which is one of the causes of the microwave effect, may occur.
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Affiliation(s)
- Daisuke Sakemi
- Applied Chemistry, Graduate School of Science and Technology, Sophia University.,Toyo Gosei Co., Ltd
| | - Satoshi Horikoshi
- Applied Chemistry, Graduate School of Science and Technology, Sophia University
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Affiliation(s)
- Toshinori Suzuki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502,
Japan
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A mini review of the crossed molecular beam apparatus in molecular reaction dynamics. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2018.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Forbes R, Boguslavskiy AE, Wilkinson I, Underwood JG, Stolow A. Excited state wavepacket dynamics in NO 2 probed by strong-field ionization. J Chem Phys 2017; 147:054305. [PMID: 28789534 DOI: 10.1063/1.4996461] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present an experimental femtosecond time-resolved study of the 399 nm excited state dynamics of nitrogen dioxide using channel-resolved above threshold ionization (CRATI) as the probe process. This method relies on photoelectron-photoion coincidence and covariance to correlate the strong-field photoelectron spectrum with ionic fragments, which label the channel. In all ionization channels observed, we report apparent oscillations in the ion and photoelectron yields as a function of pump-probe delay. Further, we observe the presence of a persistent, time-invariant above threshold ionization comb in the photoelectron spectra associated with most ionization channels at long time delays. These observations are interpreted in terms of single-pump-photon excitation to the first excited electronic X̃ 2A1 state and multi-pump-photon excitations to higher-lying states. The short time delay (<100 fs) dynamics in the fragment channels show multi-photon pump signatures of higher-lying neutral state dynamics, in data sets recorded with higher pump intensities. As expected for pumping NO2 at 399 nm, non-adiabatic coupling was seen to rapidly re-populate the ground state following excitation to the first excited electronic state, within 200 fs. Subsequent intramolecular vibrational energy redistribution results in the spreading of the ground state vibrational wavepacket into the asymmetric stretch coordinate, allowing the wavepacket to explore nuclear geometries in the asymptotic region of the ground state potential energy surface. Signatures of the vibrationally "hot" ground state wavepacket were observed in the CRATI spectra at longer time delays. This study highlights the complex and sometimes competing phenomena that can arise in strong-field ionization probing of excited state molecular dynamics.
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Affiliation(s)
- Ruaridh Forbes
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Andrey E Boguslavskiy
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
| | - Iain Wilkinson
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
| | - Jonathan G Underwood
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Albert Stolow
- National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
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Scoles G. The Independence of the Junior Scientist's Mind: At What Price? Annu Rev Phys Chem 2016; 67:1-17. [PMID: 27023759 DOI: 10.1146/annurev-physchem-040215-112236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
When I was facing the daunting task of recounting my approximately 70 years of scientific career and some aspects of my personal life, I decided to write this autobiographical piece in a "different" way. After a section on the almost bare facts of my life (Section 1), I include several other parts, loosely connected in time, in each of which I make an almost self-contained point, decreasing in this way the need for consistency and coherence in the whole article. I discuss, for example, the importance of original ideas, the independence of junior colleagues, and my work with molecular beams and in nanomedicine. I end by acknowledging those I was lucky enough to learn from in my intellectual development as a research scientist and with a couple of recommendations that may be useful to my junior and not-so-junior colleagues.
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Affiliation(s)
- Giacinto Scoles
- Dipartimento di Scienze Mediche e Biologiche, Università degli Studi di Udine, 33100 Udine, Italy;
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Dupré P. Photodissociation resonances of jet-cooled NO2 at the dissociation threshold by CW-CRDS. J Chem Phys 2015; 142:174305. [DOI: 10.1063/1.4919093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8
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Ng CY. State-to-State Spectroscopy and Dynamics of Ions and Neutrals by Photoionization and Photoelectron Methods. Annu Rev Phys Chem 2014; 65:197-224. [DOI: 10.1146/annurev-physchem-040412-110002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cheuk-Yiu Ng
- Department of Chemistry, University of California, Davis, California 95616;
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Sneh O, Cheshnovsky O. Triplet State Interrogation in Supersonic Beams by Surface Electron Ejection. Isr J Chem 2013. [DOI: 10.1002/ijch.199000003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Luckhaus D, Quack M, Schmitt U, Suhm MA. On FTIR Spectroscopy in Asynchronously Pulsed Supersonic Free Jet Expansions and on the Interpretation of Stretching Spectra of HF Clusters. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19950990333] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hippler M, Quack M. Overtone Spectroscopy of Chloroform in a Supersonic Jet by Vibrationally Assisted Dissociation and Photofragment Ionization. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19950990327] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Xing X, Reed B, Kyung Bahng M, Wang P, Koo Woo H, Jong Baek S, Shing Lam C, Yiu Ng C. High-Resolution Infrared-Vacuum Ultraviolet Photoion and Pulsed Field Ionization-Photoelectron Methods for Spectroscopic Studies of Neutrals and Cations. CHINESE J CHEM PHYS 2008. [DOI: 10.1088/1674-0068/21/03/193-201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Xing X, Reed B, Bahng MK, Ng CY. Infrared−Vacuum Ultraviolet Pulsed Field Ionization-Photoelectron Study of C2H4+ Using a High-Resolution Infrared Laser. J Phys Chem A 2008; 112:2572-8. [DOI: 10.1021/jp711684w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xi Xing
- Department of Chemistry, University of California, Davis, Davis, California 95616
| | - Beth Reed
- Department of Chemistry, University of California, Davis, Davis, California 95616
| | - Mi-Kyung Bahng
- Department of Chemistry, University of California, Davis, Davis, California 95616
| | - C. Y. Ng
- Department of Chemistry, University of California, Davis, Davis, California 95616
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Shubert VA, Zwier TS. IR−IR−UV Hole-Burning: Conformation Specific IR Spectra in the Face of UV Spectral Overlap. J Phys Chem A 2007; 111:13283-6. [PMID: 18047306 DOI: 10.1021/jp0775606] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- V. Alvin Shubert
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
| | - Timothy S. Zwier
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
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Hippler M, Oeltjen L, Quack M. High-Resolution Continuous-Wave-Diode Laser Cavity Ring-Down Spectroscopy of the Hydrogen Fluoride Dimer in a Pulsed Slit Jet Expansion: Two Components of the N = 2 Triad near 1.3 μm. J Phys Chem A 2007; 111:12659-68. [DOI: 10.1021/jp076894s] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Hippler
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland, and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, England
| | - Lars Oeltjen
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland, and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, England
| | - Martin Quack
- Physical Chemistry, ETH Zürich, CH-8093 Zürich, Switzerland, and Department of Chemistry, University of Sheffield, Sheffield S3 7HF, England
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Affiliation(s)
- Robin M Hochstrasser
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
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Shinohara H, Yamada T, Ge M, Kimura K, Mashiko S. Applying a Spray-jet Method for Measuring Naphthalene Derivatives by Nanosecond Laser MPI TOF-MS. CHEM LETT 2005. [DOI: 10.1246/cl.2005.234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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van Mourik T. First-principles quantum chemistry in the life sciences. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2004; 362:2653-2670. [PMID: 15539363 DOI: 10.1098/rsta.2004.1469] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The area of computational quantum chemistry, which applies the principles of quantum mechanics to molecular and condensed systems, has developed drastically over the last decades, due to both increased computer power and the efficient implementation of quantum chemical methods in readily available computer programs. Because of this, accurate computational techniques can now be applied to much larger systems than before, bringing the area of biochemistry within the scope of electronic-structure quantum chemical methods. The rapid pace of progress of quantum chemistry makes it a very exciting research field; calculations that are too computationally expensive today may be feasible in a few months' time! This article reviews the current application of 'first-principles' quantum chemistry in biochemical and life sciences research, and discusses its future potential. The current capability of first-principles quantum chemistry is illustrated in a brief examination of computational studies on neurotransmitters, helical peptides, and DNA complexes.
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Affiliation(s)
- Tanja van Mourik
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
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Wang P, Xing X, Baek SJ, Ng CY. Rovibrationally Selected and Resolved Pulsed Field Ionization-Photoelectron Study of Ethylene. J Phys Chem A 2004. [DOI: 10.1021/jp0464268] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peng Wang
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Xi Xing
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Sun Jong Baek
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
| | - C. Y. Ng
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
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Wang P, Xing X, Lau KC, Woo HK, Ng CY. Rovibrational-state-selected pulsed field ionization-photoelectron study of methyl iodide using two-color infrared-vacuum ultraviolet lasers. J Chem Phys 2004; 121:7049-52. [PMID: 15473769 DOI: 10.1063/1.1807818] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The preparation of methyl iodide (CH(3)I) in selected rovibrational states [nu(7)=1 (C-H stretch); J] by infrared (IR) excitation prior to vacuum ultraviolet (VUV) photoionization has greatly simplified the observed pulsed field ionization-photoelectron (PFI-PE) spectra, allowing the direct determination of the rotational constants B(+)(C(+))=0.254+/-0.003 cm(-1) for CH(3)I(+)(X (2)E(3/2);nu(7) (+)) and the ionization energy (76 896.9+/-0.2 cm(-1)) for CH(3)I(+)(X (2)E(3/2);nu(7) (+)=1,J(+)=3/2)<--CH(3)I(X (1)A(1);nu(7)=1,J=0). The IR-VUV-PFI-PE and IR-VUV-photoion measurements also provide relative state-to-state (nu(7) (+)=1, J(+)<--nu(7)=1, J) cross sections for the photoionization process.
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Affiliation(s)
- P Wang
- Department of Chemistry, University of California at Davis, Davis, California 95616, USA
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Nizkorodov SA, Sander SP, Brown LR. Temperature and Pressure Dependence of High-Resolution Air-Broadened Absorption Cross Sections of NO2 (415−525 nm). J Phys Chem A 2004. [DOI: 10.1021/jp049461n] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. A. Nizkorodov
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
| | - S. P. Sander
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109
| | - L. R. Brown
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109
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Kawasaki M, Bersohn R. Photodissociation of Small Molecules in the Gas Phase. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.1885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Xin J, Reid SA. Zeeman quantum-beat spectroscopy of NO2: Eigenstate-resolved Landé gF factors near dissociation threshold. J Chem Phys 2002. [DOI: 10.1063/1.1423328] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Xin J, Reid SA, Santoro F, Petrongolo C. On the energy dependence of the hyperfine interaction in excited states of NO2. J Chem Phys 2001. [DOI: 10.1063/1.1409356] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Satta M, Latini A, Piccirillo S, Di Palma T, Scuderi D, Speranza M, Giardini A. Energetics of monohydrated chiral R(+)-1-phenyl-1-propanol: supersonic beam experiments and density functional calculations. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(99)01222-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Die Energieverhältnisse von Molekülkomplexen im Ultraschallstrahl: ein spektroskopisches Werkzeug zur Unterscheidung von Enantiomeren. Angew Chem Int Ed Engl 1999. [DOI: 10.1002/(sici)1521-3757(19990315)111:6<838::aid-ange838>3.0.co;2-o] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Biesheuvel CA, Bulthuis J, Janssen MHM, Stolte S, Snijders JG. High-resolution laser spectroscopy of NO2 just above the X̃ 2A1–Ã 2B2 conical intersection: Transitions of K−=0 stacks. J Chem Phys 1998. [DOI: 10.1063/1.477640] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Uy D, Davis S, Nesbitt DJ. High-resolution infrared spectroscopy of jet-cooled allyl radical (CH2–CH–CH2): In-phase (ν1) and out-of-phase (ν13) antisymmetric CH2 stretching vibrations. J Chem Phys 1998. [DOI: 10.1063/1.477425] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Biesheuvel C, ter Steege D, Bulthuis J, Janssen M, Snijders J, Stolte S. High-resolution bolometric spectroscopy of NO2 in the region of 13352 cm−1. Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)00316-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Heidecke SA, Fu Z, Colt JR, Morse MD. Spectroscopy of AlAr and AlKr from 31 000 cm−1 to the ionization limit. J Chem Phys 1992. [DOI: 10.1063/1.463157] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sneh O, Amirav A, Cheshnovsky O. The branching of nonradiative processes in isoquinoline. J Chem Phys 1989. [DOI: 10.1063/1.456884] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gedanken A, Kuebler NA, Robin MB, Herrick DR. Stern–Gerlach deflection spectra of nitrogen oxide radicals. J Chem Phys 1989. [DOI: 10.1063/1.455808] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Grover J, Walters E, Arneberg D, Santandrea C. Competitive production of weakly bound heterodimers in free jet expansions. Chem Phys Lett 1988. [DOI: 10.1016/0009-2614(88)87449-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Amrein A, Hollenstein H, Locher P, Quack M, Schmitt U, Bürger H. Analysis of the v4 and v1 bands of CF3Cl measured by supersonic free-jet ftir spectroscopy. Chem Phys Lett 1987. [DOI: 10.1016/0009-2614(87)80155-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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Picosecond laser-induced fluorescence study of the collisionless photodissociation of nitrocompounds at 266 nm. Chem Phys 1986. [DOI: 10.1016/0301-0104(86)80145-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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43
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Baba M. Spectroscopic study of 2‐indanone: The T1 3(n,π*) and S1 1(n,π*) states. J Chem Phys 1985. [DOI: 10.1063/1.449191] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Baba M, Nagashima U, Hanazaki I. Barrier height to inversion of aliphatic carbonyl compounds in the S1(n,π*) state; ab initio study of formaldehyde. Chem Phys 1985. [DOI: 10.1016/0301-0104(85)87007-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Baba M, Hanazaki I. The S1(n,π*) states of cyclopentanone and cyclobutanone in a supersonic nozzle beam. J Chem Phys 1984. [DOI: 10.1063/1.447642] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Matsumi Y, Munakata T, Kasuya T. Direct observation of the B″ 3Πu–X 3Σ−g transition of diatomic sulfur in a supersonic free jet. J Chem Phys 1984. [DOI: 10.1063/1.447804] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Short-lived intermediates often play key roles in determining the course of chemical reactions. Recently the combination of sophisticated laser techniques and supersonic free jet expansions has offered new insight into the structure and reactivity of such intermediates. Because of their extremely reactive nature the intermediates are produced in situ in the expansion. The free jet expansion provides cooling of the intermediates to very low temperatures, so that even complex organic free radicals and molecular ions can be identified and characterized. Radical-radical reactions and ionic cluster formation likewise proceed in the expansion and can be monitored by laser spectroscopy.
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Imasaka T, Fukuoka H, Hayashi T, Ishibashi N. Supersonic jet fluorescence spectrometry of perylene and benzo[a]pyrene. Anal Chim Acta 1984. [DOI: 10.1016/s0003-2670(00)85542-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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