1
|
Yokoyama Y, Kawaguchi S, Mizumaki M. Bayesian framework for analyzing adsorption processes observed via time-resolved X-ray diffraction. Sci Rep 2023; 13:14349. [PMID: 37699922 PMCID: PMC10497613 DOI: 10.1038/s41598-023-40573-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/13/2023] [Indexed: 09/14/2023] Open
Abstract
Clarifying dynamic processes of materials is an important research topic in materials science. Time-resolved X-ray diffraction is a powerful technique for probing dynamic processes. To understand the dynamics, it is essential to analyze time-series data using appropriate time-evolution models and accurate start times of dynamic processes. However, conventional analyses based on non-linear least-squares fitting have difficulty both evaluating time-evolution models and estimating start times. Here, we establish a Bayesian framework including time-evolution models. We investigate an adsorption process, which is a representative dynamic process, and extract information about the time-evolution model and adsorption start time. The information enables us to estimate adsorption properties such as rate constants more accurately, thus achieving more precise understanding of dynamic adsorption processes. Our framework is highly versatile, can be applied to other dynamic processes such as chemical reactions, and is expected to be utilized in various areas of materials science.
Collapse
Affiliation(s)
- Yuichi Yokoyama
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo, 679-5198, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo, 679-5198, Japan
| | - Masaichiro Mizumaki
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo, 679-5198, Japan.
- Faculty of Science, Kumamoto University, Kurokami, Kumamoto, 860-8555, Japan.
| |
Collapse
|
2
|
Slama M, Habli H, Laajimi M, Ghalla H, Ben El Hadj Rhouma M. Microsolvation of lithium cation in xenon clusters: An octahedral growth pattern. J Mol Graph Model 2022; 116:108229. [PMID: 35671571 DOI: 10.1016/j.jmgm.2022.108229] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 05/09/2022] [Accepted: 05/19/2022] [Indexed: 01/18/2023]
Abstract
The structural and energetic proprieties for the Li + Xen (n = 1-18) clusters are investigated using both Basin-Hopping combined with Potential Model description (BH-PM) and DFT methods. A structural transition from tetrahedral (4 coordination) form to octahedral (6 coordination) one is observed for n = 6. Above this size, all structures have an octahedral core. The cubic-face-centered arrangement for xenon atoms is detected for Li + Xe14. To the best of our knowledge, the Li + Xen (n = 1-18) clusters are studied in the present work for the first time using the DFT theoretical approach. The M062X functional combined with aug-cc-pVDZ (for Li) and def2-TZVP (for Xe) basis sets reproduces accurately the CCSD(T) potential energy curve of Li + Xe system. Atom-Centered Density Matrix Propagation (ADMP) molecular dynamic calculations have been carried. Moreover, we investigate the larger sizes n = 31-35, 44, and 55 for the first time using the BH-PM theoretical approach. The closing of the first and second octahedron shells are proved for the n = 6 and 34 sizes, respectively. The relative stabilities of the Li + Xen molecules are also studied by computing the total energy, the binding energy per atoms for each size n. Then, the second energy difference between the size n and its two near neighbors allows identifying the magic number series. Our present data are analyzed, discussed and compared with the available theoretical and experimental data.
Collapse
Affiliation(s)
- Marwa Slama
- Université de Monastir, Institut Préparatoire aux Études des Ingénieurs de Monastir, Laboratoire d'Études des Milieux Ionisés et Réactifs (EMIR), 5000 Monastir, Tunisia.
| | - Hela Habli
- Université de Monastir, Faculté des Sciences de Monastir, Laboratoire de Physique Quantique et Statistique, Avenue de l'Environnement 5019 Monastir, Tunisia; Université de Sousse, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse, Rue ibn Khaldun, Cité Taffala, 4003 Sousse, Tunisia
| | - Maha Laajimi
- Université de Monastir, Faculté des Sciences de Monastir, Laboratoire de Physique Quantique et Statistique, Avenue de l'Environnement 5019 Monastir, Tunisia
| | - Houcine Ghalla
- Université de Monastir, Faculté des Sciences de Monastir, Laboratoire de Physique Quantique et Statistique, Avenue de l'Environnement 5019 Monastir, Tunisia
| | - Mounir Ben El Hadj Rhouma
- Université de Monastir, Institut Préparatoire aux Études des Ingénieurs de Monastir, Laboratoire d'Études des Milieux Ionisés et Réactifs (EMIR), 5000 Monastir, Tunisia
| |
Collapse
|
3
|
Briant M, Mestdagh JM, Gaveau MA, Poisson L. Reaction dynamics within a cluster environment. Phys Chem Chem Phys 2022; 24:9807-9835. [PMID: 35441619 DOI: 10.1039/d1cp05783a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This perspective article reviews experimental and theoretical works where rare gas clusters and helium nanodroplets are used as a nanoreactor to investigate chemical dynamics in a solvent environment. A historical perspective is presented first followed by specific considerations on the mobility of reactants within these reaction media. The dynamical response of pure clusters and nanodroplets to photoexcitation is shortly reviewed before examining the role of the cluster (or nanodroplet) degrees of freedom in the photodynamics of the guest atoms and molecules.
Collapse
Affiliation(s)
- Marc Briant
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France
| | | | - Marc-André Gaveau
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France
| | - Lionel Poisson
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France.
| |
Collapse
|
4
|
Zbidi M, Slama M, Issa K, Ben El Hadj Rhouma M. Structures of Na(3s)Xen and Na(3p)Xen with n = 1–12: Low energy isomers and absorption spectra. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
5
|
Lietard A, Piani G, Briant M, Gaveau MA, Faisan S, Mazet V, Soep B, Mestdagh JM, Poisson L. Self-trapping relaxation decay investigated by time-resolved photoelectron spectroscopy. Phys Chem Chem Phys 2018; 20:11206-11214. [PMID: 29632903 DOI: 10.1039/c7cp06789e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present work combines time-resolved photoelectron spectroscopy on isolated species with high-level data processing to address an issue which usually pertains to materials science: the electronic relaxation dynamics towards the formation of a self-trapped exciton (STE). Such excitons are common excited states in ionic crystals, silica and rare gas matrices. They are associated with a strong local deformation of the matrix. Argon clusters were taken as a model. They are excited initially to a Wannier exciton at 14 eV and their evolution towards the formation of an STE has showed an unusual type of vibronic relaxation where the electronic excitation of the cluster decreases linearly as a function of time with a 0.59 ± 0.06 eV ps-1 rate. The decay was followed for 3.0 ps, and the STE formation occurred in ∼5.1 ± 0.7 ps.
Collapse
Affiliation(s)
- Aude Lietard
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France.
| | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Buchachenko AA, Viehland LA. Interaction potentials and transport properties of Ba, Ba +, and Ba 2+ in rare gases from He to Xe. J Chem Phys 2018; 148:154304. [PMID: 29679969 DOI: 10.1063/1.5025861] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
A highly accurate, consistent set of ab initio interaction potentials is obtained for the title systems at the coupled cluster with singles, doubles, and non-iterative triples level of theory with extrapolation to the complete basis set limit. These potentials are shown to be more reliable than the previous potentials based on their long-range behavior, equilibrium properties, collision cross sections, and transport properties.
Collapse
Affiliation(s)
- Alexei A Buchachenko
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Building 3, Moscow 143026, Russia
| | - Larry A Viehland
- Science Department, Chatham University, Pittsburgh, Pennsylvania 15232, USA
| |
Collapse
|
7
|
Slama M, Issa K, Zbidi M, Ben El Hadj Rhouma M. Microsolvation of K+ in xenon clusters: a three-body approximation and structural transition. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1284353] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Marwa Slama
- Laboratoire d'Etudes des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Monastir, Tunisia
| | - Khaled Issa
- Laboratoire d'Etudes des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Monastir, Tunisia
- KACST Technology Innovation Center in Radio frequency and Photonics for the e-Society (RFTONICS), King Saud University, Riyadh, Saudi Arabia
| | - Meriem Zbidi
- Laboratoire d'Etudes des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Monastir, Tunisia
| | - Mounir Ben El Hadj Rhouma
- Laboratoire d'Etudes des Milieux Ionisés et Réactifs (EMIR), Institut Préparatoire aux Etudes d'Ingénieurs, Monastir, Tunisia
| |
Collapse
|
8
|
von Vangerow J, Coppens F, Leal A, Pi M, Barranco M, Halberstadt N, Stienkemeier F, Mudrich M. Imaging Excited-State Dynamics of Doped He Nanodroplets in Real-Time. J Phys Chem Lett 2017; 8:307-312. [PMID: 27996261 DOI: 10.1021/acs.jpclett.6b02598] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The real-time dynamics of excited alkali metal atoms (Rb) attached to quantum fluid He nanodroplets is investigated using femtosecond imaging spectroscopy and time-dependent density functional theory. We disentangle the competing dynamics of desorption of excited Rb atoms off the He droplet surface and solvation inside the droplet interior as the Rb atom is ionized. For Rb excited to the 5p and 6p states, desorption occurs on starkly differing time scales (∼100 versus ∼1 ps, respectively). The comparison between theory and experiment indicates that desorption proceeds either impulsively (6p) or in a transition regime between impulsive dissociation and complex desorption (5p).
Collapse
Affiliation(s)
- Johannes von Vangerow
- Physikalisches Institut, Universität Freiburg , Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - François Coppens
- Laboratoire des Collisions, Agrégats, Réactivité, IRSAMC, UMR 5589, CNRS et Université Paul Sabatier-Toulouse 3, 118 route de Narbonne, F-31062 Toulouse Cedex 09, France
| | - Antonio Leal
- Departament FQA, Facultat de Física, and IN2UB, Universitat de Barcelona , Diagonal 645, 08028 Barcelona, Spain
| | - Martí Pi
- Departament FQA, Facultat de Física, and IN2UB, Universitat de Barcelona , Diagonal 645, 08028 Barcelona, Spain
| | - Manuel Barranco
- Laboratoire des Collisions, Agrégats, Réactivité, IRSAMC, UMR 5589, CNRS et Université Paul Sabatier-Toulouse 3, 118 route de Narbonne, F-31062 Toulouse Cedex 09, France
- Departament FQA, Facultat de Física, and IN2UB, Universitat de Barcelona , Diagonal 645, 08028 Barcelona, Spain
| | - Nadine Halberstadt
- Laboratoire des Collisions, Agrégats, Réactivité, IRSAMC, UMR 5589, CNRS et Université Paul Sabatier-Toulouse 3, 118 route de Narbonne, F-31062 Toulouse Cedex 09, France
| | - Frank Stienkemeier
- Physikalisches Institut, Universität Freiburg , Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Marcel Mudrich
- Physikalisches Institut, Universität Freiburg , Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| |
Collapse
|
9
|
Davis BM, McCaffrey JG. Absorption spectroscopy of heavy alkaline earth metals Ba and Sr in rare gas matrices--CCSD(T) calculations and atomic site occupancies. J Chem Phys 2016; 144:044308. [PMID: 26827218 DOI: 10.1063/1.4940688] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Isolation of the heavier alkaline earth metals Ba and Sr in the solid rare gases (RGs) Ar, Kr, and Xe is analysed with absorption spectroscopy and interpreted partly with the assistance of ab initio calculations of the diatomic M ⋅ RG ground state interaction potentials. The y(1)P ← a(1)S resonance transitions in the visible spectral region are used to compare the isolation conditions of these two metal atom systems and calcium. Complex absorption bands were recorded in all three metal atom systems even after extensive sample annealing. Coupled cluster calculations conducted on the ground states of the nine M ⋅ RG diatomics (M = Ca, Sr, and Ba; RG = Ar, Kr, and Xe) at the coupled cluster single, double, and non-iterative triple level of theory revealed long bond lengths (>5 Å) and shallow bound regions (<130 cm(-1)). All of the M ⋅ RG diatomics have bond lengths considerably longer than those of the rare gas dimers, with the consequence that isolation of these metal atoms in a single substitutional site of the solid rare gas is unlikely, with the possible exception of Ca/Xe. The luminescence of metal dimer bands has been recorded for Ba and Sr revealing very different behaviours. Resonance fluorescence with a lifetime of 15 ns is observed for the lowest energy transition of Sr2 while this transition is quenched in Ba2. This behaviour is consistent with the absence of vibrational structure on the dimer absorption band in Ba2 indicating lifetime broadening arising from efficient relaxation to low-lying molecular states. More extensive 2D excitation-emission data recorded for the complex site structures present on the absorption bands of the atomic Ba and Sr systems will be presented in future publications.
Collapse
Affiliation(s)
- Barry M Davis
- Department of Chemistry, Maynooth University, National University of Ireland-Maynooth, County Kildare, Ireland
| | - John G McCaffrey
- Department of Chemistry, Maynooth University, National University of Ireland-Maynooth, County Kildare, Ireland
| |
Collapse
|
10
|
Awali S, Gaveau MA, Briant M, Mestdagh JM, Soep B, Gobert O, Maksimenka R, Poisson L. Multipronged mapping to the dynamics of a barium atom deposited on argon clusters. Phys Chem Chem Phys 2016; 18:32378-32386. [DOI: 10.1039/c6cp04878a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dynamics of an electronically excited Ba atom at the surface of an Ar≈500 cluster in a nanosecond frequency-resolved and femtosecond time-resolved multipronged approach.
Collapse
Affiliation(s)
- S. Awali
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| | - M.-A. Gaveau
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| | - M. Briant
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| | - J.-M. Mestdagh
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| | - B. Soep
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| | - O. Gobert
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| | - R. Maksimenka
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| | - L. Poisson
- LIDYL
- CEA
- CNRS
- Université Paris-Saclay
- F-91191 Gif-sur-Yvette
| |
Collapse
|
11
|
Douady J, Awali S, Poisson L, Soep B, Mestdagh JM, Gervais B. Spectroscopy and Dynamics of K Atoms on Argon Clusters. J Phys Chem A 2015; 119:6074-81. [PMID: 25854161 DOI: 10.1021/jp512691s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a combined experimental and simulation study of the 4s → 4p photoexcitation of the K atom trapped at the surface of ArN clusters made of a few hundred Ar atoms. Our experimental method based on photoelectron spectroscopy allows us to firmly establish that one single K atom is trapped at the surface of the cluster. The absorption spectrum is characterized by the splitting of the atomic absorption line into two broad bands, a Π band associated with p orbitals parallel to the cluster surface and a Σ band associated with the perpendicular orientation. The spectrum is consistent with observations reported for K atoms trapped on lighter inert gas clusters, but the splitting between the Π and Σ bands is significantly larger. We show that a large amount of K atoms are transiently stuck and eventually lost by the Ar cluster, in contrast with previous observations reported for alkaline earth metal systems. The excitation in the Σ band leads systematically to the ejection of the K atom from the Ar cluster. On the contrary, excitation in the Π band leads to the formation of a bound state. In this case, the analysis of the experimental photoelectron spectrum by means of nonadiabatic molecular dynamics simulation shows that the relaxation drives the system toward a basin where the coordination of the K atom is 2.2 Ar atoms on the average, in a poorly structured surface.
Collapse
Affiliation(s)
- J Douady
- †Unité mixte CEA-CNRS-ENSICAEN-UCBN 6252 BP 5133, CIMAP, F-14070 Caen, Cedex 05, France
| | - S Awali
- ‡Laboratoire Francis Perrin, URA 2453, CEA/IRAMIS/LIDYL, F-91191 Gif-sur-Yvette, France.,§EMIR, Institut Préparatoire aux Etudes d'Ingénieurs de Monastir (IPEIM), 5019 Monastir, Tunisie
| | - L Poisson
- ∥Laboratoire Francis Perrin, URA 2453, CNRS/IRAMIS/LIDYL, F-91191 Gif-sur-Yvette, France
| | - B Soep
- ∥Laboratoire Francis Perrin, URA 2453, CNRS/IRAMIS/LIDYL, F-91191 Gif-sur-Yvette, France
| | - J M Mestdagh
- ∥Laboratoire Francis Perrin, URA 2453, CNRS/IRAMIS/LIDYL, F-91191 Gif-sur-Yvette, France
| | - B Gervais
- †Unité mixte CEA-CNRS-ENSICAEN-UCBN 6252 BP 5133, CIMAP, F-14070 Caen, Cedex 05, France
| |
Collapse
|
12
|
Abdessalem K, Habli H, Ghalla H, Yaghmour SJ, Calvo F, Oujia B. Many-body effects on the structures and stability of Ba2+Xen(n= 1–39, 54) clusters. J Chem Phys 2014; 141:154308. [DOI: 10.1063/1.4896607] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
|
13
|
Masson A, Heitz MC, Mestdagh JM, Gaveau MA, Poisson L, Spiegelman F. Coupled electronic and structural relaxation pathways in the postexcitation dynamics of Rydberg states of BaArN clusters. PHYSICAL REVIEW LETTERS 2014; 113:123005. [PMID: 25279627 DOI: 10.1103/physrevlett.113.123005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Indexed: 06/03/2023]
Abstract
We investigate, theoretically, the joint relaxation of orbital and structure in postexcitation dynamics of Rydberg states of cluster BaArN (N=250). Mixed quantum-classical dynamics is used to account for the nonadiabatic transitions among more than 160 electronic states, represented via a diatomics-in-molecules Hamiltonian. The simulation illustrates the complex multistep relaxation processes and provides detailed insight in the mechanisms contributing to the final-time experimental photoelectron spectrum.
Collapse
Affiliation(s)
- A Masson
- Laboratoire Francis Perrin, CNRS-URA 2453, CEA IRAMIS, Laboratoire Interactions, Dynamique et Lasers, F-91191 Gif-sur-Yvette Cedex, France
| | - M-C Heitz
- Laboratoire de Chimie et de Physique Quantiques/IRSAMC, CNRS and Université de Toulouse (UPS), Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex, France
| | - J-M Mestdagh
- Laboratoire Francis Perrin, CNRS-URA 2453, CEA IRAMIS, Laboratoire Interactions, Dynamique et Lasers, F-91191 Gif-sur-Yvette Cedex, France
| | - M-A Gaveau
- Laboratoire Francis Perrin, CNRS-URA 2453, CEA IRAMIS, Laboratoire Interactions, Dynamique et Lasers, F-91191 Gif-sur-Yvette Cedex, France
| | - L Poisson
- Laboratoire Francis Perrin, CNRS-URA 2453, CEA IRAMIS, Laboratoire Interactions, Dynamique et Lasers, F-91191 Gif-sur-Yvette Cedex, France
| | - F Spiegelman
- Laboratoire de Chimie et de Physique Quantiques/IRSAMC, CNRS and Université de Toulouse (UPS), Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex, France
| |
Collapse
|
14
|
Awali S, Poisson L, Soep B, Gaveau MA, Briant M, Pothier C, Mestdagh JM, Rhouma MBEH, Hochlaf M, Mazet V, Faisan S. Time resolved observation of the solvation dynamics of a Rydberg excited molecule deposited on an argon cluster-I: DABCO☆at short times. Phys Chem Chem Phys 2014; 16:516-26. [DOI: 10.1039/c3cp53172d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
15
|
Janeček I, Janča T, Naar P, Kalus R, Gadea FX. Multiscale approach combining nonadiabatic dynamics with long-time radiative and non-radiative decay: Dissociative ionization of heavy rare-gas tetramers revisited. J Chem Phys 2013; 138:044303. [DOI: 10.1063/1.4775804] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
16
|
Salem FB, Rhouma MBEH, Spiegelman F, Mestdagh JM, Hochlaf M. Theoretical investigations of the electronic states of NaXe: A comparative study. J Chem Phys 2012; 137:224310. [DOI: 10.1063/1.4769286] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
17
|
Fedor J, Kočišek J, Poterya V, Votava O, Pysanenko A, Lipciuc ML, Kitsopoulos TN, Fárník M. Velocity map imaging of HBr photodissociation in large rare gas clusters. J Chem Phys 2011; 134:154303. [DOI: 10.1063/1.3578610] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
18
|
Bouissou T, Durand G, Heitz MC, Spiegelman F. A comprehensive theoretical investigation of the electronic states of Ca2 up to the Ca(4s(2) 1S) + Ca(4s5p 1P) dissociation limit. J Chem Phys 2010; 133:164317. [PMID: 21033798 DOI: 10.1063/1.3503655] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A theoretical survey of the electronic structure of Ca(2) is presented using two-electron pseudopotentials complemented by core-polarization operators on Ca atoms and multireference configuration interaction/quasidegenerate perturbation theory (MRCI/QDPT) treatment of molecular excited states. The spectroscopic constants of 70 electronic states up to 30,000 cm(-1) above the ground state are determined. This implies all Ca(2) states dissociating up to the Ca(4s(2) (1)S) + Ca(4s5p (3,1)P) dissociation limits. All spin states (singlet, triplet, and quintet) are investigated. The work emphasizes the variety of interactions implying singly valence and lowest Rydberg excited states, doubly excited states generated by atom pairs (3)P(4s4p) + (3)P(4s4p), or (3)P(4s4p) + (3)D(4s3d), 4p3d double excitations asymptotically localized on a single-atom. Zwitterionic Ca(+) + Ca(-) configurations are evidenced and shown to induce specific electronic patterns in (1)Σ(g)(+), (3)Σ(g)(+), (1)Σ(u)(+), (3)Σ(u)(+), (1)Π(g), (3)Π(g), (1)Π(u), and (3)Π(u) symmetry manifolds. They also provide insight for qualitative features (barriers) found for the lower electronic states already investigated in previous publications by other authors.
Collapse
Affiliation(s)
- Thomas Bouissou
- Laboratoire de Chimie et Physique Quantiques/IRSAMC, Université de Toulouse (UPS) and CNRS, 118 route de Narbonne, F-31062 Toulouse Cedex, France
| | | | | | | |
Collapse
|