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Saly E, Ferenc D, Mátyus E. Pre-Born–Oppenheimer energies, leading-order relativistic and QED corrections for electronically excited states of molecular hydrogen. Mol Phys 2023. [DOI: 10.1080/00268976.2022.2163714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Eszter Saly
- Institute of Chemistry, ELTE, Eötvös Loránd University, Budapest, Hungary
| | - Dávid Ferenc
- Institute of Chemistry, ELTE, Eötvös Loránd University, Budapest, Hungary
| | - Edit Mátyus
- Institute of Chemistry, ELTE, Eötvös Loránd University, Budapest, Hungary
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2
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Ochoa Franco A, Beyer M. Black-body radiation-induced photodissociation and population redistribution of weakly bound states in H 2+. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2133750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- A. D. Ochoa Franco
- Department of Physics and Astronomy, LaserLaB, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - M. Beyer
- Department of Physics and Astronomy, LaserLaB, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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3
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Dembiński S, Karwowski J, Szudy J, Helgaker T. Lutosław Wolniewicz (1930–2020). Mol Phys 2022. [DOI: 10.1080/00268976.2021.2024904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Stanisław Dembiński
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Toruń, Poland
| | - Jacek Karwowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Toruń, Poland
| | - Józef Szudy
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Toruń, Poland
| | - Trygve Helgaker
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, Oslo, Norway
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Lai KF, Beyer M, Salumbides EJ, Ubachs W. Photolysis Production and Spectroscopic Investigation of the Highest Vibrational States in H 2 (X 1Σ g+ v = 13, 14). J Phys Chem A 2021; 125:1221-1228. [PMID: 33502853 PMCID: PMC7883349 DOI: 10.1021/acs.jpca.0c11136] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 11/29/2022]
Abstract
Rovibrational quantum states in the X1Σg+ electronic ground state of H2 are prepared in the v = 13 vibrational level up to its highest bound rotational level J = 7, and in the highest bound vibrational level v = 14 (for J = 1) by two-photon photolysis of H2S. These states are laser-excited in a subsequent two-photon scheme into F1Σg+ outer well states, where the assignment of the highest (v,J) states is derived from a comparison of experimentally known levels in F1Σg+, combined with ab initio calculations of X1Σg+ levels. The assignments are further verified by excitation of F1Σg+ population into autoionizing continuum resonances, which are compared with multichannel quantum defect calculations. Precision spectroscopic measurements of the F-X intervals form a test for the ab initio calculations of ground state levels at high vibrational quantum numbers and large internuclear separations, for which agreement is found.
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Affiliation(s)
- K.-F. Lai
- Department of Physics and
Astronomy, LaserLaB, Vrije UniversiteitDe Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - M. Beyer
- Department of Physics and
Astronomy, LaserLaB, Vrije UniversiteitDe Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - E. J. Salumbides
- Department of Physics and
Astronomy, LaserLaB, Vrije UniversiteitDe Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - W. Ubachs
- Department of Physics and
Astronomy, LaserLaB, Vrije UniversiteitDe Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
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5
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Trivikram TM, Salumbides EJ, Jungen C, Ubachs W. Excitation of H 2 at large internuclear separation: outer well states and continuum resonances. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1599457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- T. M. Trivikram
- Department of Physics and Astronomy, and LaserLaB, Vrije Universiteit, Amsterdam, The Netherlands
| | - E. J. Salumbides
- Department of Physics and Astronomy, and LaserLaB, Vrije Universiteit, Amsterdam, The Netherlands
| | - Ch. Jungen
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - W. Ubachs
- Department of Physics and Astronomy, and LaserLaB, Vrije Universiteit, Amsterdam, The Netherlands
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6
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Affiliation(s)
- M. Glass-Maujean
- Laboratoire D'etudes Du Rayonnement et De La Matière en Astrophysique et Atmosphères, Sorbonne Universités, Observatoire de Paris, CNRS, Paris, France
| | - H. Schmoranzer
- Fachbereich Physik, Technische Universität Kaiserslautern, Kaiserslautern, Germany
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8
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A quantum defect analysis of heavy Rydberg behaviour in the BΣu+1 and B″B‾Σu+1 states of H2 and the BΣu+1 state of D2. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.07.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Chartrand AM, Duan W, Ekey RC, McCormack EF. Observations of the high vibrational levels of the B′′B̄ 1Σu+ state of H 2. J Chem Phys 2016; 144:014307. [DOI: 10.1063/1.4939079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A. M. Chartrand
- Department of Physics, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, USA
| | - W. Duan
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa 52242, USA
| | - R. C. Ekey
- Physics and Astronomy Department, University of Mount Union, Alliance, Ohio 44601, USA
| | - E. F. McCormack
- Department of Physics, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, USA
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Dickenson G, Ivanov T, Ubachs W, Roudjane M, de Oliveira N, Joyeux D, Nahon L, Tchang-Brillet WÜ, Glass-Maujean M, Schmoranzer H, Knie A, Kübler S, Ehresmann A. VUV Spectroscopic Study of theD1ΠuState of Molecular Deuterium. Mol Phys 2011. [DOI: 10.1080/00268976.2011.631056] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- G.D. Dickenson
- a Institute for Lasers, Life and Biophotonics , VU University , De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - T.I. Ivanov
- a Institute for Lasers, Life and Biophotonics , VU University , De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - W. Ubachs
- a Institute for Lasers, Life and Biophotonics , VU University , De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - M. Roudjane
- b Synchrotron Soleil, Orme des Merisiers , St Aubin BP 48, 91192 GIF sur Yvette cedex, France
- d Laboratoire d'Étude du Rayonnement et de la Matière en Astrophysique , UMR 8112 du CNRS , 5 place Jules Janssen, Meudon cedex , Observatoire de Paris-Meudon, 92195 , France
| | - N. de Oliveira
- b Synchrotron Soleil, Orme des Merisiers , St Aubin BP 48, 91192 GIF sur Yvette cedex, France
| | - D. Joyeux
- b Synchrotron Soleil, Orme des Merisiers , St Aubin BP 48, 91192 GIF sur Yvette cedex, France
- c Laboratoire Charles Fabry de l'Institut d'Optique, CNRS , Univ Paris-Sud Campus Polytechnique , RD128, Palaiseau cedex, 91127 , France
| | - L. Nahon
- b Synchrotron Soleil, Orme des Merisiers , St Aubin BP 48, 91192 GIF sur Yvette cedex, France
| | - W.-Ü.L. Tchang-Brillet
- d Laboratoire d'Étude du Rayonnement et de la Matière en Astrophysique , UMR 8112 du CNRS , 5 place Jules Janssen, Meudon cedex , Observatoire de Paris-Meudon, 92195 , France
- e Université Pierre et Marie Curie , Paris 6 , France
| | - M. Glass-Maujean
- f Laboratoire de Physique Moléculaire pour l'Atmosphère et l'Astrophysique UMR7092 , Université P. et M. Curie , 4 place Jussieu, Paris cedex 05, 75252 , France
| | - H. Schmoranzer
- g Fachbereich Physik , Technische Universität Kaiserslautern , Kaiserslautern , D-67653 , Germany
| | - A. Knie
- h Institut für Physik , Universität Kassel , Kassel , D-34132 , Germany
| | - S. Kübler
- h Institut für Physik , Universität Kassel , Kassel , D-34132 , Germany
| | - A. Ehresmann
- h Institut für Physik , Universität Kassel , Kassel , D-34132 , Germany
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12
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Dickenson GD, Ivanov TI, Roudjane M, de Oliveira N, Joyeux D, Nahon L, Tchang-Brillet WÜL, Glass-Maujean M, Haar I, Ehresmann A, Ubachs W. Synchrotron vacuum ultraviolet radiation studies of the D Π1u state of H2. J Chem Phys 2010; 133:144317. [DOI: 10.1063/1.3502471] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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13
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Vieitez MO, Ivanov TI, Reinhold E, de Lange CA, Ubachs W. Spectroscopic observation and characterization of H(+)H(-) heavy Rydberg states. J Phys Chem A 2009; 113:13237-45. [PMID: 19921940 DOI: 10.1021/jp9039918] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A series of discrete resonances was observed in the spectrum of H2, which can be unambiguously assigned to bound quantum states in the 1/R Coulombic potential of the H+H- ion-pair system. Two-step laser excitation was performed, using tunable extreme ultraviolet radiation at lambda = 94-96 nm in the first step, and tunable ultraviolet radiation in the range lambda = 310-350 nm in the second step. The resonances, detected via H+ and H2+ ions produced in the decay process, follow a sequence of principal quantum numbers (n = 140-230) associated with a Rydberg formula in which the Rydberg constant is mass scaled. The series converges upon the ionic H+H- dissociation threshold. This limit can be calculated without further assumptions from known ionization and dissociation energies in the hydrogen system and the electronegativity of the hydrogen atom. A possible excitation mechanism is discussed in terms of a complex resonance. Detailed measurements are performed to unravel and quantify the decay of the heavy Rydberg states into molecular H2+ ions, as well as into atomic fragments, both H(n = 2) and H(n = 3). Lifetimes are found to scale as n3.
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Affiliation(s)
- M O Vieitez
- Laser Centre, Vrije Universiteit, Amsterdam, Netherlands
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14
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Corongiu G, Clementi E. Energy and Density Analyses of the 1Σu+ States in the H2 Molecule from the United Atom to Dissociation. J Phys Chem A 2009; 113:14791-9. [DOI: 10.1021/jp9049395] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giorgina Corongiu
- Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, Via Valleggio 11, I-22100 Como, Italy
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15
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Corongiu G, Clementi E. Energy and density analyses of the H2 molecule from the united atom to dissociation: The ∑1g+ states. J Chem Phys 2009; 131:034301. [DOI: 10.1063/1.3168506] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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16
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Vieitez MO, Ivanov TI, Reinhold E, de Lange CA, Ubachs W. Observation of a Rydberg series in H+H-: a heavy Bohr atom. PHYSICAL REVIEW LETTERS 2008; 101:163001. [PMID: 18999662 DOI: 10.1103/physrevlett.101.163001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Indexed: 05/27/2023]
Abstract
We report on the realization of a heavy "Bohr atom," through the spectroscopic observation of a Rydberg series of bound quantum states at principal quantum numbers n=140 to 230. The system is made heavy by replacing an electron inside a hydrogen atom by a composite H- particle, thus forming a H+H- Coulombically bound system obeying the physical laws of a generalized atom with appropriate mass scaling.
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Affiliation(s)
- M O Vieitez
- Laser Centre, Vrije Universiteit, De Boelelaan 1081, Amsterdam, The Netherlands
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18
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Bandrauk AD, Tchitchekova DS, Chelkowski S. Multiphoton ion pair spectroscopy (MPIPS) with ultrashort laser pulses for the H2 molecule. J Phys Chem A 2007; 111:9340-6. [PMID: 17718549 DOI: 10.1021/jp073580w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Time-dependent Schrödinger equation, TDSE, simulations have been performed in order to prepare and study via MPIPS the evolution of vibrational wave packets on the ion pair electronic state potentials B''B1Sigma(u)(+) and Hh1Sigma(g)(+) of the H2 molecule. Using ab initio potential surfaces and transition moments, we present two- and three-photon excitation schemes with ultrashort pulses (tau <or= 10 fs) to prepare coherent superpositions of the two ion pair H(+)H(-) and H(-)H(+) states from the doorway B1Sigma(u)(+) state, which result from the strong radiative coupling between these two electronic states. The simulations are used to estimate the time evolution and recursion times of vibrational wave packets at large internuclear distances, usually not accessible by single-photon spectroscopy. Conditions for the localization of the ion pair states are proposed.
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Affiliation(s)
- André D Bandrauk
- Laboratoire de Chimie Théorique, Département de Chimie, Faculté des Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada.
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19
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Glass-Maujean M, Klumpp S, Werner L, Ehresmann A, Schmoranzer H. Study of the B″B¯Σu+1 state of H2: Transition probabilities from the ground state, dissociative widths, and Fano parameters. J Chem Phys 2007; 126:144303. [PMID: 17444708 DOI: 10.1063/1.2715928] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The transition probabilities, the dissociation widths, and the associated Fano parameters for rovibronic lines with J"=0,...,3 of the absorption bands of the B"B 1Sigmau+ state out of the X 1Sigmag+ v"=0 ground state were measured over the complete vibrational progression, showing clearly that only the inner-well state with B" 4psigma character can absorb vuv light and predissociate efficiently. The absolute values of these transition probablities, predissociation widths, and Fano parameters were found to agree well with ab initio calculations if one takes into account that the calculations neglect nonadiabatic couplings.
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Affiliation(s)
- M Glass-Maujean
- Laboratoire de Physique Moléculaire pour l'Atmosphère et l'Astrophysique, Université Pierre et Marie Curie/CNRS, 4, Place Jussieu, F-75252 Paris Cedex 05, France
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Ross SC, Yoshinari T, Ogi Y, Tsukiyama K. Decay dynamics of the long-range H¯Σg+1 state of D2 and H2: Experiment and theory. J Chem Phys 2006; 125:133205. [PMID: 17029452 DOI: 10.1063/1.2264331] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We present accurate experimental measurements of the lifetimes of rovibrational levels of the long-range H1Sigmag+ state for both D2 and H2, obtained directly from the observation of the time-dependent decay of the fluorescence from these excited levels. These results improve upon and extend those of Reinhold et al. [J. Chem. Phys. 112, 10754 (2000)]. Several decay pathways are open to these levels including fluorescence, predissociation, and autoionization. We present theoretical results for each of these processes, each calculated using the simplest but still appropriate level of theory. In particular, the theoretical calculations provide a quantitative explanation of the dramatic vibrational dependence of the observed lifetimes, the isotope dependence of the lifetimes for levels well localized within the H potential well and therefore not subject to significant tunneling, and an insight into the role of enhanced tunneling in autoionization. In these calculations each of the rovibrational levels of the H state is treated individually, without having to engage in a global coupled-state calculation.
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Affiliation(s)
- Stephen C Ross
- Department of Physics and Centre for Laser, Atomic, and Molecular Sciences, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 Canada.
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Palacios A, Bachau H, Martín F. Enhancement and control of H2 dissociative ionization by femtosecond VUV laser pulses. PHYSICAL REVIEW LETTERS 2006; 96:143001. [PMID: 16712067 DOI: 10.1103/physrevlett.96.143001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2005] [Indexed: 05/09/2023]
Abstract
We report ab initio calculations of H2 ionization by VUV/fs 10(12) W/cm2 laser pulses including correlation and all electronic and vibrational degrees of freedom (DOF). Inclusion of the nuclear DOF leads to a substantial increase of resonance enhanced multiphoton ionization. By varying pulse duration, it is possible to control the ratio of dissociative to nondissociative ionization as well as the final H+(2) vibrational distribution. For pulses longer than 10 fs and proportional to omega>0.46 a.u., dissociative ionization entirely dominates, which is a very unusual situation in photoionization studies.
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Affiliation(s)
- A Palacios
- Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Yoshinari T, Ogi Y, Tsukiyama K. The EF, GK, HΣg+, I1Πg, and J1Δg States of HD: Term Values and Fluorescence Lifetimes. J Phys Chem A 2004. [DOI: 10.1021/jp0401022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Toshio Yoshinari
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Yoshihiro Ogi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Koichi Tsukiyama
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
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Affiliation(s)
- W Klemperer
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.
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