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Hong Q, Sun Q, Pirani F, Valentín-Rodríguez MA, Hernández-Lamoneda R, Coletti C, Hernández MI, Bartolomei M. Energy exchange rate coefficients from vibrational inelastic O 2(Σg-3) + O 2(Σg-3) collisions on a new spin-averaged potential energy surface. J Chem Phys 2021; 154:064304. [PMID: 33588556 DOI: 10.1063/5.0041244] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A new spin-averaged potential energy surface (PES) for non-reactive O2(Σg-3) + O2(Σg-3) collisions is presented. The potential is formulated analytically according to the nature of the principal interaction components, with the main van der Waals contribution described through the improved Lennard-Jones model. All the parameters involved in the formulation, having a physical meaning, have been modulated in restricted variation ranges, exploiting a combined analysis of experimental and ab initio reference data. The new PES is shown to be able to reproduce a wealth of different physical properties, ranging from the second virial coefficients to transport properties (shear viscosity and thermal conductivity) and rate coefficients for inelastic scattering collisions. Rate coefficients for the vibrational inelastic processes of O2, including both vibration-to-vibration (V-V) and vibration-to-translation/rotation (V-T/R) energy exchanges, were then calculated on this PES using a mixed quantum-classical method. The effective formulation of the potential and its combination with an efficient, yet accurate, nuclear dynamics treatment allowed for the determination of a large database of V-V and V-T/R energy transfer rate coefficients in a wide temperature range.
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Affiliation(s)
- Qizhen Hong
- State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China
| | - Quanhua Sun
- State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China
| | - Fernando Pirani
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, via Elce di Sotto, 8 - 06183 Perugia, Italy
| | - Mónica A Valentín-Rodríguez
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Cuernavaca 62210, Morelos, Mexico
| | - Ramón Hernández-Lamoneda
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Cuernavaca 62210, Morelos, Mexico
| | - Cecilia Coletti
- Dipartimento di Farmacia, Università G. d'Annunzio Chieti-Pescara, via dei Vestini, 66100 Chieti, Italy
| | - Marta I Hernández
- Instituto de Física Fundamental - CSIC, C/Serrano 123, Madrid, Spain
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Model of Daytime Oxygen Emissions in the Mesopause Region and Above: A Review and New Results. ATMOSPHERE 2020. [DOI: 10.3390/atmos11010116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Atmospheric emissions of atomic and molecular oxygen have been observed since the middle of 19th century. In the last decades, it has been shown that emissions of excited oxygen atom O(1D) and molecular oxygen in electronically–vibrationally excited states O2(b1Σ+g, v) and O2(a1Δg, v) are related by a unified photochemical mechanism in the mesosphere and lower thermosphere (MLT). The current paper consists of two parts: a review of studies related to the development of the model of ozone and molecular oxygen photodissociation in the daytime MLT and new results. In particular, the paper includes a detailed description of formation mechanism for excited oxygen components in the daytime MLT and presents comparison of widely used photochemical models. The paper also demonstrates new results such as new suggestions about possible products for collisional reactions of electronically–vibrationally excited oxygen molecules with atomic oxygen and new estimations of O2(b1Σ+g, v = 0–10) radiative lifetimes which are necessary for solving inverse problems in the lower thermosphere. Moreover, special attention is given to the “Barth’s mechanism” in order to demonstrate that for different sets of fitting coefficients its contribution to O2(b1Σ+g, v) and O2(a1Δg, v) population is neglectable in daytime conditions. In addition to the review and new results, possible applications of the daytime oxygen emissions are presented, e.g., the altitude profiles O(3P), O3 and CO2 can be retrieved by solving inverse photochemical problems when emissions from electronically vibrationally excited states of O2 molecule are used as proxies.
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McCaffery AJ. Kinetics and dynamics of near-resonant vibrational energy transfer in gas ensembles of atmospheric interest. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2018; 376:rsta.2017.0150. [PMID: 29431678 DOI: 10.1098/rsta.2017.0150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/19/2017] [Indexed: 06/08/2023]
Abstract
This study of near-resonant, vibration-vibration (V-V) gas-phase energy transfer in diatomic molecules uses the theoretical/computational method, of Marsh & McCaffery (Marsh & McCaffery 2002 J. Chem. Phys.117, 503 (doi:10.1063/1.1489998)) The method uses the angular momentum (AM) theoretical formalism to compute quantum-state populations within the component molecules of large, non-equilibrium, gas mixtures as the component species proceed to equilibration. Computed quantum-state populations are displayed in a number of formats that reveal the detailed mechanism of the near-resonant V-V process. Further, the evolution of quantum-state populations, for each species present, may be followed as the number of collision cycles increases, displaying the kinetics of evolution for each quantum state of the ensemble's molecules. These features are illustrated for ensembles containing vibrationally excited N2 in H2, O2 and N2 initially in their ground states.This article is part of the theme issue 'Modern theoretical chemistry'.
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Tendo S, Tanimoto H, Uchiyama T, Goto H, Hara A, Fujihara K, Kohguchi H, Yamasaki K. Vibrational relaxation of S2(a1Δg) by collisions with SF6 and CF4. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.06.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wodtke AM. Electronically non-adiabatic influences in surface chemistry and dynamics. Chem Soc Rev 2016; 45:3641-57. [DOI: 10.1039/c6cs00078a] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electronically nonadiabatic interactions between molecules and metal surfaces are now well known. But evidence that such interactions influence reaction rates is still scarce. This paper reviews research related to this topic and proposes pathways forward.
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Affiliation(s)
- Alec M. Wodtke
- Institute for Physical Chemistry
- Georg-August University of Göttingen
- Germany
- Max Planck Institute for Biophysical Chemistry
- Göttingen
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Mu B, Cui X, Shen Y, Dai K. State-resolved collisional relaxation of highly vibrationally excited CsH by CO2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 148:299-310. [PMID: 25909904 DOI: 10.1016/j.saa.2015.03.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 08/18/2014] [Accepted: 03/02/2015] [Indexed: 06/04/2023]
Abstract
Quenching of highly vibrationally excited CsH(X(1)Σ(+), v=15-23) by collisions with CO2 was investigated. A significant fraction of the initial population of highly vibrationally excited CsH(v=22) was relaxed to a low vibrational level (Δv=-5). The near-resonant 5-1 vibration-to-vibration (V-V) energy was efficiently exchanged. The rate constants for the rotational levels of CO2(00(0)0) [J=36-60] and CO2(00(0)1) [J=5-31] from the collisions with excited CsH were determined. The experiments revealed that the collisions resulting in CO2(00(0)0) were accompanied by substantial excitation in rotation and translation. The vibrationally excited CO2(00(0)1) state exhibited rotational and translational energy distributions near those of the initial state. The total quenching rates relative to the probed state of excited CsH were determined for both CO2 states. The corresponding data indicated that the gains in the rotational and translational energies in CO2 were sensitive to the collisional depletion of excited CsH.
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Affiliation(s)
- Baoxia Mu
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China; Department of Physics, Xinjiang University, Urumqi 830046, China.
| | - Xiuhua Cui
- Department of Physics, Xinjiang University, Urumqi 830046, China
| | - Yifan Shen
- Department of Physics, Xinjiang University, Urumqi 830046, China.
| | - Kang Dai
- Department of Physics, Xinjiang University, Urumqi 830046, China
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Alghazi A, Liu J, Dai K, Shen YF. Quantum state-resolved energy redistribution of highly vibrationally excited CsH(D) by collisions withH2(D2). Chem Phys 2015. [DOI: 10.1016/j.chemphys.2014.12.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wang SY, Zhang B, Zhu DH, Dai K, Shen YF. Energy-dependence of vibrational relaxation between highly vibrationally excited KH (X1Σ+, ν"=14-23) and H2, and N2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:517-525. [PMID: 22728970 DOI: 10.1016/j.saa.2012.05.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 05/05/2012] [Accepted: 05/21/2012] [Indexed: 06/01/2023]
Abstract
Vibrational state total relaxation rate coefficients, k(ν") (M), for KH (ν"=14-23) by M=H(2) and N(2) have been investigated in an overtone pump-probe configuration. At ν"=14, 15, 16 and 17, the rate coefficients k(ν)(″) (M) increase linearly with vibrational quantum number. The region (ν"=18, 19, 20 and 21) where the dependence is much stronger than linear has significant contribution from multiquantum (Δν≥2) relaxation. For ν"=18, 19, 20 and 21, 0.25, 0.31, 0.38 and 0.31 of the initially prepared population undergo two-quantum (Δν=2) vibrational relaxation in KH (ν")+H(2) collisions. In KH (ν")+N(2), the time profile of ν"=14(15) after preparation of ν"=19(20) was measured. A clear bimodal distribution is observed. The time scale of the first peak is much shorter than the known collisional lifetimes of the intervening vibrational levels and thus a sequential single-quantum relaxation mechanism can be explicitly ruled out. Relaxation of KD with D(2) has been also investigated. The relaxation rate coefficients exhibit distinct maxima for both isotopes (KH and KD). We discuss possible explanation of the experimental results including mass effect, V-R energy transfer and V-V energy transfer.
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Affiliation(s)
- Shu-ying Wang
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China.
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Watanabe S, Kohguchi H, Yamasaki K. Vibrational relaxation of O2(X3Σ(-)g, v = 6-8) by collisions with O2(X3Σ(-)g, v = 0): solution of the problems in the integrated profiles method. J Phys Chem A 2012; 116:7791-6. [PMID: 22747342 DOI: 10.1021/jp305241e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The linear kinetic analysis called the integrated profiles method (IPM) makes it simple to analyze the multistep relaxation processes of vibrational manifold. The problem that plots for linear regression in the IPM analysis cannot be made, however, has been found in the study of self relaxation of O2(X3Σ(-)g, v = 6-8). The cause of the problem is the identical time-dependence of the populations of the adjacent vibrational levels. An addition of CF4 into the system made a difference in the time profiles and enabled us to make IPM analysis and determine the rate coefficients. In the experiments, a gaseous mixture of O3/O2/CF4 in an Ar carrier at 298 K was irradiated at 266 nm, and the direct photoproduct O2(X3Σ(-)g, v = 6-9) from O3 was detected by laser-induced fluorescence (LIF)in the B3Σu-X3Σ(-)g transition. Time-resolved LIF intensities of O2(X3Σ(-)g, v) at various pressures of O2 and fixed pressure of CF4 were recorded. The resulting rate coefficients for v = 6−8 correlate smoothly with those for v ≤ 5 and v ≥ 8 reported previously.The vibrational-level dependence (v = 2-13) of the rate coefficients for relaxation of O2(X3Σ(-)g, v) by O2 is accounted for by the balance between the harmonic transition probabilities and the energy defect in the V-V energy-transfer mechanism.
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Affiliation(s)
- Shinji Watanabe
- Department of Chemistry, Graduate School of Science, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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Bartels N, Schäfer T, Hühnert J, Field RW, Wodtke AM. Production of a beam of highly vibrationally excited CO using perturbations. J Chem Phys 2012; 136:214201. [DOI: 10.1063/1.4722090] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Pajón-Suárez P, Rubayo-Soneira J, Hernández-Lamoneda R. A New ab Initio Potential Energy Surface for Studying Vibrational Relaxation in NO(v) + NO Collisions. J Phys Chem A 2011; 115:2892-9. [DOI: 10.1021/jp200199y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pedro Pajón-Suárez
- Instituto Superior de Tecnologías y Ciencias Aplicadas, Av. Salvador Allende y Luaces, Quinta de Los Molinos, La Habana 10600, Cuba
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca, Morelos., 62210, México
| | - Jesús Rubayo-Soneira
- Instituto Superior de Tecnologías y Ciencias Aplicadas, Av. Salvador Allende y Luaces, Quinta de Los Molinos, La Habana 10600, Cuba
| | - Ramón Hernández-Lamoneda
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca, Morelos., 62210, México
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Watanabe S, Usuda SY, Kohguchi H, Yamasaki K. Nascent vibrational energy distributions of O2(X3Sigma(g)-, nu = 6-13) generated in the photolysis of O3 at 266 nm. J Phys Chem A 2010; 114:735-40. [PMID: 19919074 DOI: 10.1021/jp908904f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The vibrational levels of O2(X3Sigma(g)-) generated in the ultraviolet photolysis of O3 at 266 nm were detected via laser-induced fluorescence (LIF) of the B3Sigma(u)- - X3Sigma(g)- system. The nascent vibrational energy distributions of O2(X3Sigma(g)-, nu = 6-13) have been measured by two different methods. One is a kinetic analysis based on the originally developed integrated profiles method (IPM). The time-resolved LIF of a single vibrational level has been recorded in the presence of CF4 or O2 as a relaxation partner. The IPM analysis of the profiles gave the relative detectabilities of adjacent vibrational levels, and the initial relative populations of the vibrational levels have been determined from the intensities of LIF subsequent to the photolysis. The other is the analysis of the area intensities of the LIF of the vibrational levels of interest. The rotational levels with the identical quantum numbers of different vibrational levels in the X3Sigma(g)- state were excited to a common vibrational level nu' = 0 in the B3Sigma(u)- state. Correction for the LIF intensities with the Franck-Condon factors was made, and the initial relative populations have been obtained. The two different methods have given similar nascent vibrational energy distributions, and comparison to the previous reports has been made.
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Affiliation(s)
- Shinji Watanabe
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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14
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Loukhovitski B, Starik A. Modeling of vibration–electronic–chemistry coupling in the atomic–molecular oxygen system. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2009.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Sharma RD, Welsh JA. Vibrational energy transfer in O2(v = 2-8)-O2(v = 0) collisions. J Chem Phys 2009; 130:194306. [PMID: 19466835 DOI: 10.1063/1.3132588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Starting with multipolar-multipolar interaction for intermolecular potential we have carried out a calculation of rate coefficients for transfer of one quantum of vibrational energy upon impact of O(2)(2 < or = v < or = 8) with O(2)(v = 0) as a function of temperature (150 K < or = T < or = 450 K). The equations for energy transfer, in the second order of perturbation theory, mediated by isotropic and anisotropic dispersion interactions, are derived. None of the parameters appearing in the calculation were adjusted to obtain agreement with the experimentally measured rate coefficients. The results of the calculation are compared with experimentally measured room temperature rate coefficients of the disappearance of O(2)(v) upon collision with O(2)(v = 0). The agreement is found to be good for the disappearance of O(2)(v = 3) and O(2)(v = 5). For O(2)(v = 2) the calculation gives a larger rate coefficient than the measured value, while for O(2)(v = 4) it gives a smaller value than obtained by measurement. For O(2)(v = 8) it agrees with one measurement and gives a value smaller than another measurement and a calculation.
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Affiliation(s)
- Ramesh D Sharma
- Space Vehicles Directorate (RVBX), Hanscom AFB, Massachusetts 01731-3010, USA.
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16
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Jammoul A, Gligorovski S, George C, D'Anna B. Photosensitized Heterogeneous Chemistry of Ozone on Organic Films. J Phys Chem A 2008; 112:1268-76. [DOI: 10.1021/jp074348t] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Adla Jammoul
- Université de Lyon 1, Lyon; CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, F-69626, France
| | - Saso Gligorovski
- Université de Lyon 1, Lyon; CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, F-69626, France
| | - Christian George
- Université de Lyon 1, Lyon; CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, F-69626, France
| | - Barbara D'Anna
- Université de Lyon 1, Lyon; CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, F-69626, France
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Brouard M, Goman A, Horrocks SJ, Johnsen AJ, Quadrini F, Yuen WH. The photodissociation dynamics of ozone at 226 and 248nm: O(PJ3) atomic angular momentum polarization. J Chem Phys 2007; 127:144304. [DOI: 10.1063/1.2790890] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Dayou F, Hernández MI, Campos-Martínez J, Hernández-Lamoneda R. Spin-orbit coupling in O2(v)+O2 collisions. II. Quantum scattering calculations on dimer states involving the XΣg−3, aΔg1, and bΣg+1 states of O2. J Chem Phys 2007; 126:194309. [PMID: 17523806 DOI: 10.1063/1.2734966] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The dynamics of collisional deactivation of O(2)(X (3)Sigma(g) (-),v=20-32) by O(2)(X (3)Sigma(g) (-),v(')=0) is investigated in detail by means of quantum-mechanical calculations. The theoretical approach involves ab initio potential energy surfaces correlating to the X (3)Sigma(g) (-), a (1)Delta(g), and b (1)Sigma(g) (+) states of O(2) and their corresponding spin-orbit couplings [F. Dayou, M. I. Hernandez, J. Campos-Martinez, and R. Hernandez-Lamoneda, J. Chem. Phys. 123, 074311 (2005)]. Accurate Rydberg-Klein-Rees potentials are included in order to improve the description of the vibrational structure of the fragments. The calculated Boltzmann-averaged depletion probabilities display a dependence with v in good agreement with experimental measurements. The onset of the vibrational-to-electronic (V-E) depletion mechanism is noticeable for v>/=26, and it is due to energy transfer to both a (1)Delta(g) and b (1)Sigma(g) (+) states of the diatom. For O(2)(X (3)Sigma(g) (-),v=28), a further and sharp increase in the removal probabilities is caused by a near degeneracy with the O(2)(b (1)Sigma(g) (+),v=19) vibrational state. Analysis of the temperature dependence of the Boltzmann-averaged probabilities indicates a transition from the vibrational-to-translational to the V-E energy transfer regime, which can be traced back to the behavior of the inelastic probabilities as functions of kinetic energy. Furthermore, branching ratios for outcomes through the three different electronic states show a strong propensity towards populating a unique vibrational level within each electronic state. These results provide supported evidence that spin-orbit couplings account for a large portion of the "dark channel" reported in total depletion measurements. New insight for further experimental and theoretical investigations is also given.
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Affiliation(s)
- Fabrice Dayou
- Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique, UMR 8112 du CNRS, Observatoire de Paris-Meudon, 5 place Jules Janssen, 92195 Meudon Cedex, France.
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Watanabe S, Usuda SY, Fujii H, Hatano H, Tokue I, Yamasaki K. Vibrational relaxation of O2(X 3 Σ–g, v = 9–13) by collisions with O2. Phys Chem Chem Phys 2007; 9:4407-13. [PMID: 17687487 DOI: 10.1039/b702840g] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vibrationally excited O(2)(X(3) Sigmag(-)) was generated in the UV laser flash photolysis of O(3) and single vibrational level was detected via laser-induced fluorescence (LIF) in the B(3) Sigmau(-)-X(3) Sigmag(-) system. The time-resolved LIF of adjacent vibrational levels has been analyzed by the integrated-profiles method and the rate coefficients for single-quantum relaxation, O(2)(X(3)Sigmag(-), v = 9-13)+ O(2)(v = 0)--> O(2)(X(3)Sigmag(-), v - 1)+ O(2)(v = 1), have been determined. To the best of our knowledge, the rate coefficients for v = 12 and 13 are measured for the first time in the present study. The efficiency of relaxation is higher at lower vibrational levels, indicating that a small energy mismatch is suitable for the energy transfer. The vibrational level dependence of all the rate coefficients for the relaxation measured in the present study and previously reported by several groups can be rationalized by the energy gap law.
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Affiliation(s)
- Shinji Watanabe
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
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Yamasaki K, Fujii H, Watanabe S, Hatano T, Tokue I. Efficient vibrational relaxation of O2(X 3sigma(g)-, nu = 8) by collisions with CF4. Phys Chem Chem Phys 2006; 8:1936-41. [PMID: 16633681 DOI: 10.1039/b516695k] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A laser flash photolysis-laser-induced fluorescence (LIF) technique has been employed to study the relaxation kinetics of vibrationally excited O2(X 3sigma(g)-. The time-resolved LIF excited B 3sigma(u)(-)-X 3sigma(g)- system has been recorded and analyzed by the integrated-profiles method. The rate coefficient for vibrational relaxation of O2(X 3sigma(g)-, nu = 8) by collisions with CF(4), [1.4 +/- 0.3(2sigma)] x 10(-11) cm3 molecule(-1) s(-1), indicates that CF4 is an efficient relaxant of O2(X 3sigma(g)- and that the propensity rule for O2 relaxation suggested by Mack et al. (J. A. Mack, K. Mikulecky and A. M. Wodtke, J. Chem. Phys., 1996, 105, 4105) has been observed experimentally.
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Affiliation(s)
- Katsuyoshi Yamasaki
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan.
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Kalogerakis KS, Copeland RA, Slanger TG. Vibrational energy transfer in O2(X 3sigma(g)-, upsilon=2,3) + O2 collisions at 330 K. J Chem Phys 2005; 123:044309. [PMID: 16095360 DOI: 10.1063/1.1982788] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Vibrational relaxation of O2(X 3sigma(g)-, upsilon=2,3) by O2 molecules is studied via a two-laser approach. Laser radiation at 266 nm photodissociates ozone in a mixture of molecular oxygen and ozone. The photolysis step produces vibrationally excited O2(a 1delta(g)) that is rapidly converted to O2(X 3sigma(g)-, upsilon=2,3) in a near-resonant adiabatic electronic energy-transfer process involving collisions with ground-state O2. The output of a tunable 193-nm ArF laser monitors the temporal evolution of the O2(X 3sigma(g)-, upsilon=2,3) population via laser-induced fluorescence detected near 360 nm. The rate coefficients for the vibrational relaxation of O2(X 3sigma(g)-, upsilon=2,3) in collision with O2 are 2.0(-0.4)(+0.6) x 10(-13) cm3 s(-1) and (2.6+/-0.4) x 10(-13) cm3 s(-1), respectively. These rate coefficients agree well with other experimental work but are significantly larger than those produced by various semiclassical theoretical calculations.
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Abstract
Vibrationally excited O2, OH, and HO2 species have been suggested (J. Phys. Chem. A 2004, 108, 758) to provide clues for explaining the "ozone deficit problem" and "HOx dilemma" in the middle atmosphere under conditions of local thermodynamic disequilibrium (LTD), but the question arises of how much LTD will affect the title ozone sink reactions. Besides providing novel kinetic results, it is shown that LTD tends to disfavor ozone depletion relative to traditional atmospheric modeling under Boltzmann equilibration, which is partly due to competition between the various reactive channels. The calculations also suggest that the title LTD processes can be important sources of highly vibrationally excited O2 in the middle atmosphere. Moreover, LTD is shown to offer an explanation for the fact that some down revision of the O + HO2 rate constant, or the ratio of the O + HO2 to O + OH rate constants, is required to improve agreement between the predictions of traditional modeling and observation. This, in turn, provides significant evidence supporting LTD at such altitudes.
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Affiliation(s)
- A J C Varandas
- Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal.
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24
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Hernandez-Lamoneda R, Ramirez-Solis A. Systematic ab initio calculations on the energetics and stability of covalent O4. J Chem Phys 2004; 120:10084-8. [PMID: 15268030 DOI: 10.1063/1.1729923] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Ab initio calculations with highly correlated methods together with extensive basis sets have been used to obtain the most accurate heat of formation and stability with respect to dissociation (into molecular oxygen) for the chemically bound tetraoxygen molecule. Our calculations show that the heat of formation is significantly smaller and that the barrier to dissociation is larger than previously assumed. In particular, we have shown that the previous theoretical estimate for the heat of formation of tetraoxygen was in error by a significant amount (18%-24%) owing to lack of accuracy in the theoretical method then used. Our best estimates places that value in the range 93-95 kcal/mol and this should be taken into consideration when discussing the possible relevance of tetraoxygen in a variety of experiments, as well as in the fundamental atmospheric chemical processes where oxygen species participate.
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Affiliation(s)
- Ramon Hernandez-Lamoneda
- Centro de Investigacion en Quimica, Universidad Autonoma del Estado de Morelos, Cuernavaca, Morelos 62210, Mexico
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25
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Varandas AJC. Are Vibrationally Excited Molecules a Clue for the “O3 Deficit Problem” and “HOx Dilemma” in the Middle Atmosphere? J Phys Chem A 2004. [DOI: 10.1021/jp036321p] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. J. C. Varandas
- Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal
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26
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Slanger TG, Copeland RA. Energetic Oxygen in the Upper Atmosphere and the Laboratory. Chem Rev 2003; 103:4731-66. [PMID: 14664631 DOI: 10.1021/cr0205311] [Citation(s) in RCA: 203] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tom G Slanger
- Molecular Physics Laboratory, SRI International, Menlo Park, CA 94025, USA
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27
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Matsumi Y, Kawasaki M. Photolysis of Atmospheric Ozone in the Ultraviolet Region. Chem Rev 2003; 103:4767-82. [PMID: 14664632 DOI: 10.1021/cr0205255] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yutaka Matsumi
- Solar Terrestrial Environment Laboratory and Graduate School of Science, Nagoya University, Toyokawa 442-8505, Japan.
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28
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A new singlet ab initio potential energy surface for studying vibrational relaxation in O2(v)+O2 collisions. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(02)01947-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Zhang L, Varandas AJC. Dynamics Study of the O2 + HO2 Atmospheric Reaction with Both Reactants Highly Vibrationally Excited. J Phys Chem A 2002. [DOI: 10.1021/jp021595i] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. Zhang
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra Codex, Portugal
| | - A. J. C. Varandas
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra Codex, Portugal
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30
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Garrido JD, Caridade PJSB, Varandas AJC. Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 4. Influence of Vibrational Relaxation in Collisions Involving Highly Excited Species. J Phys Chem A 2002. [DOI: 10.1021/jp0203245] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. D. Garrido
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra, Portugal
| | | | - A. J. C. Varandas
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra, Portugal
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31
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Varandas A, Llanio-Trujillo J. On triplet tetraoxygen: ab initio study along minimum energy path and global modelling. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00429-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Caridade PJSB, Sabin J, Garrido JD, Varandas AJC. Dynamics of OH + O2vibrational relaxation processes. Phys Chem Chem Phys 2002. [DOI: 10.1039/b203101a] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Affiliation(s)
- Lei Zhang
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra Codex, Portugal
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34
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35
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Silva M, Jongma R, Field RW, Wodtke AM. The dynamics of "stretched molecules": experimental studies of highly vibrationally excited molecules with stimulated emission pumping. Annu Rev Phys Chem 2001; 52:811-52. [PMID: 11326081 DOI: 10.1146/annurev.physchem.52.1.811] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We review stimulated emission pumping as used to study molecular dynamics. The review presents unimolecular as well as scattering studies. Topics include intramolecular vibrational redistribution, unimolecular isomerization and dissociation, van der Waals clusters, rotational energy transfer, vibrational energy transfer, gas-surface interactions, atmospheric effects resulting from nonequilibrium vibrational excitation, and vibrational promotion of electron transfer.
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Affiliation(s)
- M Silva
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA.
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36
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Caridade PJSB, Zhang L, Garrido JD, Varandas AJC. Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 2. Influence of Reactants Internal Energy in HO2 and O3 Formation. J Phys Chem A 2001. [DOI: 10.1021/jp004308o] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - L. Zhang
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra, Portugal
| | - J. D. Garrido
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra, Portugal
| | - A. J. C. Varandas
- Departamento de Química, Universidade de Coimbra, P-3049 Coimbra, Portugal
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37
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Lee W, Adamovich IV, Lempert WR. Optical pumping studies of vibrational energy transfer in high-pressure diatomic gases. J Chem Phys 2001. [DOI: 10.1063/1.1332400] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Macheret SO, Adamovich IV. Semiclassical modeling of state-specific dissociation rates in diatomic gases. J Chem Phys 2000. [DOI: 10.1063/1.1313386] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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39
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Plönjes E, Palm P, Lee W, D. Chidley M, Adamovich IV, R. Lempert W, Rich J. Vibrational energy storage in high pressure mixtures of diatomic molecules. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00257-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Hernández-Lamoneda R, Ramı́rez-Solı́s A. Reactivity and electronic states of O4 along minimum energy paths. J Chem Phys 2000. [DOI: 10.1063/1.1288370] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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41
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Yang S, Canagaratna MR, Witonsky SK, Coy SL, Steinfeld JI, Field RW, Kachanov AA. Intensity Measurements and Collision-Broadening Coefficients for the Oxygen A Band Measured by Intracavity Laser Absorption Spectroscopy. JOURNAL OF MOLECULAR SPECTROSCOPY 2000; 201:188-197. [PMID: 10814483 DOI: 10.1006/jmsp.2000.8096] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
High-sensitivity, high-resolution intracavity laser absorption spectroscopy (ICLAS) has been used to measure line intensities, nitrogen-broadening coefficients, and self-broadening coefficients in the A band (b(1)Sigma(+)(g) <-- X(3)Sigma(-)(g)) of oxygen. Both linear cavity and ring cavity ICLAS configurations were used for these measurements, and the results were intercompared. The results were compared to values measured using long-path multiple-reflection cells by K. D. Ritter and T. D. Wilkinson [J. Mol. Spectrosc. 121, 1-19 (1987)] and L. Brown and C. Plymate, [J. Mol. Spectrosc. 199, 166-179 (2000)]. New results are included for weakly absorbing transitions, not observed in the earlier measurements, such as high rotational states (up to J = 39), hot-band transitions (v' = 1 <-- v" = 1), and isotopically substituted species ((18)O(2) and (16)O(18)O). Isotopic variants ((16)O(2), (18)O(2), and (16)O(18)O) have similar broadening coefficients for corresponding rotational levels, but the self-broadening coefficients are larger in the hot band (v' = v" = 1) as compared with v' = v" = 0 transitions. An ECS-EP scaling analysis of the v' = v" = 0 self-broadening data accurately represents the available data, with the exception of the N = 0 and N = 1 levels. Copyright 2000 Academic Press.
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Affiliation(s)
- S Yang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139
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42
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Plönjes E, Palm P, Chernukho AP, Adamovich IV, William Rich J. Time-resolved Fourier transform infrared spectroscopy of optically pumped carbon monoxide. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00096-3] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Hernández-Lamoneda R, Ramírez-Solís A. Spin–orbit coupling in highly vibrationally excited O2(v) and O2(v=0)–O2(v). Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00349-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Geiser JD, Dylewski SM, Mueller JA, Wilson RJ, Toumi R, Houston PL. The vibrational distribution of O2(X 3Σg−) produced in the photodissociation of ozone between 226 and 240 and at 266 nm. J Chem Phys 2000. [DOI: 10.1063/1.480679] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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45
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Jongma RT, Wodtke AM. Fast multiquantum vibrational relaxation of highly vibrationally excited O2. J Chem Phys 1999. [DOI: 10.1063/1.480458] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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46
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Drabbels M, Wodtke AM. Collisions and Chemistry of Super-Excited Molecules: Experiments Using the PUMP−DUMP−PROBE Technique. J Phys Chem A 1999. [DOI: 10.1021/jp990972x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marcel Drabbels
- Department of Chemistry, Swiss Federal Institute of Technology Lausanne, CH-1015 Lausanne EPFL, Switzerland
| | - Alec M. Wodtke
- Department of Chemistry, University of California at Santa Barbara, Santa Barbara California 93106
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47
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Jongma RT, Shi S, Wodtke AM. Electronic nonadiabaticity in highly vibrationally excited O2(X 3Σg−): Spin-orbit coupling between X 3Σg− and b 1Σg+. J Chem Phys 1999. [DOI: 10.1063/1.479618] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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48
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Adamovich IV, Rich JW. Three-dimensional nonperturbative analytic model of vibrational energy transfer in atom–molecule collisions. J Chem Phys 1998. [DOI: 10.1063/1.477417] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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49
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Wang B, Gu Y, Kong F. Multilevel Vibrational−Vibrational (V−V) Energy Transfer from CO(v) to O2 and CO2. J Phys Chem A 1998. [DOI: 10.1021/jp9813793] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Baoshan Wang
- School of Chemistry, Shandong University, Jinan, Shandong 250100, China
| | - Yueshu Gu
- School of Chemistry, Shandong University, Jinan, Shandong 250100, China
| | - Fanao Kong
- The Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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50
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Wang W, C. Varandas A. On the O2(v′)+O2(v′′) atmospheric reaction. II. The role of rotational excitation. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00164-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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