1
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Wang P, Gong S, Mo Y. Bond dissociation energy of O2 measured by fully state-to-state resolved threshold fragment yield spectra. J Chem Phys 2024; 160:164302. [PMID: 38647301 DOI: 10.1063/5.0207288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 04/03/2024] [Indexed: 04/25/2024] Open
Abstract
We have determined the bond dissociation energy of O2 by measuring fully state-to-state resolved threshold fragment yield spectra in the XUV energy region, O2X3Σg-,N″,J″→O(PJ3)+O(S1o3)/O(S2o5). Our results have yielded a bond dissociation energy value of 41 269.19 ± 0.10 cm-1, which is consistent with previous measurements but exhibits a significantly lower uncertainty, approximately five times smaller. It is noteworthy that this study is the first to simultaneously achieve fine structure state resolution for the parent O2 molecule and spin-orbit state resolution for the O(3PJ) fragments in the measurement of O2 bond dissociation energy. As a result, our findings have established a solid foundation for the obtained data.
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Affiliation(s)
- Peng Wang
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Shiyan Gong
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Yuxiang Mo
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
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2
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Kallos IS, Bar I, Baraban JH. Significantly Improved Detection of Molecular Oxygen by Two-Color Resonance-Enhanced Multiphoton Ionization. J Phys Chem Lett 2024; 15:2639-2642. [PMID: 38421311 DOI: 10.1021/acs.jpclett.4c00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
We report a new spectroscopic detection scheme for molecular oxygen that achieves roughly two orders of magnitude higher sensitivity for fully rotationally resolved spectra than the current state of the art. Two-color (2 + 1') resonance-enhanced multiphoton ionization (REMPI) via the 3d Rydberg complex yields state-selective spectra with signal comparable to the intense but diffuse C 3sσ 3Πg ← X 3Σg- (2 + 1) REMPI bands without significant saturation or broadening. The resulting increase in sensitivity permitted observation of the very weak 3dπ 1Δ2 ← X 3Σg- transitions and is independent of the intermediate state. This advance in ionization efficiency and quantum state-selective sensitivity for O2 promises to aid physical and chemical studies across a wide variety of fields.
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Affiliation(s)
- Itai S Kallos
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Ilana Bar
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Joshua H Baraban
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
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3
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Rösch D, Xu Y, Guo H, Hu X, Osborn DL. SO 2 Photodissociation at 193 nm Directly Forms S( 3P) + O 2( 3Σ g-): Implications for the Archean Atmosphere on Earth. J Phys Chem Lett 2023; 14:3084-3091. [PMID: 36950956 DOI: 10.1021/acs.jpclett.3c00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
It is well-documented that photodissociation of SO2 at λ = 193 nm produces O(3Pj) + SO X(3Σ-). We provide experimental evidence of a new product channel from one-photon absorption producing S(3Pj) + O2 X(3Σg-) in 2-4% yield. We probe the reactant and all products with time-resolved photoelectron photoion coincidence spectroscopy. High-level ab initio calculations suggest that the new product channel can only occur on the ground-state potential energy surface through internal conversion from the excited state, followed by isomerization to a transient SOO intermediate. Classical trajectories on the ground-state potential energy surface with random initial conditions qualitatively reproduce the experimental yields. This unexpected photodissociation pathway may help reconcile discrepancies in sulfur mass-independent fractionation mechanisms in Earth's geologic history, which shape our understanding of the Archean atmosphere and the Great Oxygenation Event in Earth's evolution.
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Affiliation(s)
- Daniel Rösch
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Yifei Xu
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico,Albuquerque, New Mexico 87131, United States
| | - Xixi Hu
- Kuang Yaming Honors School, Institute for Brain Sciences, Nanjing University, Nanjing 210023, China
| | - David L Osborn
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
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4
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Bastian B, Asmussen JD, Ben Ltaief L, Czasch A, Jones NC, Hoffmann SV, Pedersen HB, Mudrich M. A new endstation for extreme-ultraviolet spectroscopy of free clusters and nanodroplets. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:075110. [PMID: 35922303 DOI: 10.1063/5.0094430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
In this work, we present a new endstation for the AMOLine of the ASTRID2 synchrotron at Aarhus University, which combines a cluster and nanodroplet beam source with a velocity map imaging and time-of-flight spectrometer for coincidence imaging spectroscopy. Extreme-ultraviolet spectroscopy of free nanoparticles is a powerful tool for studying the photophysics and photochemistry of resonantly excited or ionized nanometer-sized condensed-phase systems. Here, we demonstrate this capability by performing photoelectron-photoion coincidence experiments with pure and doped superfluid helium nanodroplets. Different doping options and beam sources provide a versatile platform to generate various van der Waals clusters as well as He nanodroplets. We present a detailed characterization of the new setup and show examples of its use for measuring high-resolution yield spectra of charged particles, time-of-flight ion mass spectra, anion-cation coincidence spectra, multi-coincidence electron spectra, and angular distributions. A particular focus of the research with this new endstation is on intermolecular charge and energy-transfer processes in heterogeneous nanosystems induced by valence-shell excitation and ionization.
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Affiliation(s)
- Björn Bastian
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
| | - Jakob D Asmussen
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
| | - Ltaief Ben Ltaief
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
| | - Achim Czasch
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Nykola C Jones
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
| | - Søren V Hoffmann
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
| | - Henrik B Pedersen
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
| | - Marcel Mudrich
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
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5
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Larsen KA, Lucchese RR, Slaughter DS, Weber T. Distinguishing resonance symmetries with energy-resolved photoion angular distributions from ion-pair formation in O 2 following two-photon absorption of a 9.3 eV femtosecond pulse. J Chem Phys 2020; 153:021103. [PMID: 32668943 DOI: 10.1063/5.0013485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a combined experimental and theoretical study on the photodissociation dynamics of ion-pair formation in O2 following resonant two-photon absorption of a 9.3 eV femtosecond pulse, where the resulting O+ ions are detected using 3D momentum imaging. Ion-pair formation states of Σg-3 and 3Πg symmetry are accessed through predissociation of optically dark continuum Rydberg states converging to the B Σg-2 ionic state, which are resonantly populated via a mixture of both parallel-parallel and parallel-perpendicular two-photon transitions. This mixture is evident in the angular distribution of the dissociation relative to the light polarization and varies with the kinetic energy release (KER) of the fragmenting ion pair. The KER-dependent photoion angular distribution reveals the underlying two-photon absorption dynamics involved in the ion-pair production mechanism and indicates the existence of two nearly degenerate continuum resonances possessing different symmetries, which can decay by coupling to ion-pair states of the same total symmetry through internal conversion.
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Affiliation(s)
- Kirk A Larsen
- Graduate Group in Applied Science and Technology, University of California, Berkeley, California 94720, USA
| | - Robert R Lucchese
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Daniel S Slaughter
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Thorsten Weber
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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6
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Symmetry of molecular Rydberg states revealed by XUV transient absorption spectroscopy. Nat Commun 2019; 10:5269. [PMID: 31754226 PMCID: PMC6872753 DOI: 10.1038/s41467-019-13251-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/29/2019] [Indexed: 11/08/2022] Open
Abstract
Transient absorption spectroscopy is utilized extensively for measurements of bound- and quasibound-state dynamics of atoms and molecules. The extension of this technique into the extreme ultraviolet (XUV) region with attosecond pulses has the potential to attain unprecedented time resolution. Here we apply this technique to aligned-in-space molecules. The XUV pulses are much shorter than the time during which the molecules remain aligned, typically \documentclass[12pt]{minimal}
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\begin{document}$$<$$\end{document}<100 fs. However, transient absorption is not an instantaneous probe, because long-lived coherences re-emit for picoseconds to nanoseconds. Due to dephasing of the rotational wavepacket, it is not clear if these coherences will be evident in the absorption spectrum, and whether the properties of the initial excitations will be preserved. We studied Rydberg states of N\documentclass[12pt]{minimal}
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\begin{document}$${}_{2}$$\end{document}2 and O\documentclass[12pt]{minimal}
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\begin{document}$${}_{2}$$\end{document}2 from 12 to 23 eV. We were able to determine the polarization direction of the electronic transitions, and hence identify the symmetry of the final states. Transient absorption spectroscopy is used to identify the structural characteristics of the atoms and molecules. Here the authors used extreme ultraviolet transient absorption spectroscopy to identify the Rydberg state symmetry of aligned molecules.
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7
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Marggi Poullain S, Klinker M, González-Vázquez J, Martín F. Resonant photoionization of O 2 up to the fourth ionization threshold. Phys Chem Chem Phys 2019; 21:16497-16504. [PMID: 31322631 DOI: 10.1039/c9cp02150g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We present a detailed theoretical study of valence-shell photoionization of the oxygen molecule by using the recently proposed XCHEM method. This method makes use of a hybrid Gaussian and B-spline basis in the framework of a close-coupling approach to describe electron correlation in the molecular electronic continuum at a level comparable to that provided by multi-reference configuration interaction methods in bound state calculations. The computed total and partial photoionization cross sections are presented and discussed, with emphasis on the series of autoionizing resonances that appear between the first and the fourth ionization thresholds, i.e., photon energies between 12 and 18 eV. More than fifty autoionizing states are identified, including series not previously reported in the literature, and their energy positions and widths are provided. The present results illustrate the potential of the XCHEM approach to accurately describe molecular autoionization, which is mostly due to electron correlation. This is relevant in view of current experimental efforts aimed at providing real-time (attosecond) imaging of autoionization dynamics in molecules.
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Affiliation(s)
- Sonia Marggi Poullain
- Departamento de Química, Módulo 13, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Markus Klinker
- Departamento de Química, Módulo 13, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Jesús González-Vázquez
- Departamento de Química, Módulo 13, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Fernando Martín
- Departamento de Química, Módulo 13, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain. and Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Cantoblanco, 28049, Madrid, Spain and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049, Madrid, Spain
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8
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Gope K, Prabhudesai VS, Mason NJ, Krishnakumar E. Dissociation dynamics of transient anion formed via electron attachment to sulfur dioxide. J Chem Phys 2017; 147:054304. [PMID: 28789530 DOI: 10.1063/1.4994899] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report the molecular dynamics of dissociative electron attachment to sulfur dioxide (SO2) by measuring the momentum distribution of fragment anions using the velocity slice imaging technique in the electron energy range of 2-10 eV. The S- channel results from symmetric dissociation which exhibits competition between the stretch mode and bending mode of vibration in the excited parent anion. The asymmetric dissociation of parent anions leads to the production of O- and SO- channels where the corresponding neutral fragments are formed in their ground as well as excited electronic states. We also identify that internal excitation of SO- is responsible for its low yield at higher electron energies.
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Affiliation(s)
- K Gope
- Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, 400005 Mumbai, India
| | - V S Prabhudesai
- Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, 400005 Mumbai, India
| | - N J Mason
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
| | - E Krishnakumar
- Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, 400005 Mumbai, India
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9
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Chakraborty D, Nag P, Nandi D. Dipolar dissociation dynamics in electron collisions with carbon monoxide. Phys Chem Chem Phys 2016; 18:32973-32980. [PMID: 27886305 DOI: 10.1039/c6cp05854j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dipolar dissociation processes in the electron collisions with carbon monoxide have been studied using time of flight (TOF) mass spectroscopy in combination with the highly differential velocity slice imaging (VSI) technique. By probing ion-pair states, both positive and/or negative ions may be detected. The ion yield curve of negative ions provides the threshold energy for the ion-pair production. On the other hand, the kinetic energy distributions and angular distributions of the fragment anion provide detailed dynamics of the dipolar dissociation process. Two ion-pair states have been identified based on angular distribution measurements using the VSI technique.
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Affiliation(s)
- Dipayan Chakraborty
- Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.
| | - Pamir Nag
- Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.
| | - Dhananjay Nandi
- Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India.
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10
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Burgess DR. An Evaluation of Gas Phase Enthalpies of Formation for Hydrogen-Oxygen (H xO y) Species. JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY 2016; 121:108-138. [PMID: 34434616 PMCID: PMC7339710 DOI: 10.6028/jres.121.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/11/2016] [Indexed: 06/13/2023]
Abstract
We have compiled gas phase enthalpies of formation for nine hydrogen-oxygen species (HxOy) and selected recommended values for H, O, OH, H2O, HO2, H2O2, O3, HO3, and H2O3. The compilation consists of values derived from experimental measurements, quantum chemical calculations, and prior evaluations. This work updates the recommended values in the NIST-JANAF (1985) and Gurvich et al. (1989) thermochemical tables for seven species. For two species, HO3 and H2O3 (important in atmospheric chemistry) and not found in prior thermochemical evaluations, we also provide supplementary data consisting of molecular geometries, vibrational frequencies, and torsional potentials which can be used to compute thermochemical functions. For all species, we also provide supplementary data consisting of zero point energies, vibrational frequencies, and ion reaction energetics.
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Affiliation(s)
- Donald R Burgess
- National Institute of Standards and Technology, Gaithersburg, MD 20899
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11
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Zhou Y, Meng Q, Mo Y. Photodissociation dynamics of superexcited O2: Dissociation channels O(5S) vs. O(3S). J Chem Phys 2014; 141:014301. [DOI: 10.1063/1.4884906] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yiyong Zhou
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Qingnan Meng
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Yuxiang Mo
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
- Center for Atomic and Molecular Nanoscience, Tsinghua University, Beijing 100084, China
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12
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Rockland U, Baumgärtel H, Rühl E, Lösking O, Müller H, Willner H. Ionic Fragmentation and Ion-Pair Formation in Chlorine Dioxide. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.199500011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Zhou C, Mo Y. Ion-pair dissociation dynamics of O2 in the range 17.2-17.5 eV studied by XUV laser and velocity map imaging method. J Chem Phys 2013; 139:084314. [PMID: 24007004 DOI: 10.1063/1.4819079] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The ion-pair dissociation dynamics of O2, O2 + hv → O(+)((4)S) + O(-)((2)P(1/2, 3/2)), in the photon energy range 17.20-17.50 eV has been studied using extreme ultraviolet laser and velocity map imaging method. The ion-pair yield spectrum and the fine structure resolved photofragment O(-)((2)P(j)) velocity map images have been recorded. The branching ratios between the two spin-orbit components O(-)((2)P(3/2)) and O(-)((2)P(1/2)) and the corresponding anisotropy parameters describing their angular distributions have been determined. It is found that the fragments O(-)((2)P(1/2)) are all from parallel transitions, while the fragments O(-)((2)P(3/2)) are from both parallel and perpendicular transitions. The main products for most of the excitation photon energies are O(-)((2)P(1/2)). The dissociation dynamics has been discussed based on the ab initio potential energy curves of the ion-pairs. The major peaks in the ion-pair yield spectrum have been assigned based on the angular distribution of the photofragments. The experimental results suggest that the so-called strong and weak series of Rydberg states converging to O2(+)b(4)Σg(-) should have symmetries of (3)Σu(-) and (3)Πu, respectively. In addition to the Rydberg states converging to O2(+)b(4)Σg(-), the Rydberg states converging to O2(+)A(2)Πu should also play a role in the ion-pair dissociation of O2.
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Affiliation(s)
- Chang Zhou
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
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14
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Lago A, Cavasso-Filho R, de Souza G, Santos A, Stolte W, Schlachter A. Anionic and cationic photodissociation of the chloroform molecule excited in the vicinity of the Cl 1s edge. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.06.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Chen LL, Xu YF, Feng Q, Tian SX, Liu FY, Shan XB, Sheng LS. Vacuum ultraviolet negative photoion spectroscopy of chloroform. J Phys Chem A 2011; 115:4248-54. [PMID: 21456568 DOI: 10.1021/jp2000927] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Negative ions Cl(-), Cl(2)(-), CCl(-), CHCl(-), and CCl(2)(-) are observed in vacuum-ultraviolet ion-pair photodissociations of chloroform (CCl(3)H) using the Hefei synchrotron radiation facility, and their ion production efficiency curves are recorded in the photon energy range of 10.00-21.50 eV. Two similar spectra of the isotope anions (35)Cl(-) and (37)Cl(-) indicate the following: Besides the strong bands corresponding to the electron transitions from valence to Rydberg orbitals converging to the ionic states, some additional peaks can be assigned with the energetically accessible multibody fragmentations; a distinct peak at photon energy 14.55 eV may be due to a cascade process (namely, the Cl(2) neutral fragment at the highly excited state D'2(3)Π(g) may be produced in the photodissociation of CCl(3)H, and then the Cl(-) anions are produced in the pulsed-field induced ion-pair dissociations of Cl(2) (D'2(3)Π(g))); two vibrational excitation progressions, nν(2)(+) and nν(2)(+) + ν(3)(+), and nν(4)(+) and nν(4)(+) + ν(2)(+), are observed around C̃ (2)E and D̃ (2)E ionic states, respectively. The enthalpies of the multibody fragmentations to Cl(2)(-), CCl(-), CHCl(-), and CCl(2)(-) are calculated with the thermochemistry data available in the literature, and these multibody ion-pair dissociation pathways are tentatively assigned in the respective anion production spectra.
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Affiliation(s)
- Liu-Li Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, China
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16
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Simpson MJ, Tuckett RP. Vacuum-UV negative photoion spectroscopy of gas-phase polyatomic molecules. INT REV PHYS CHEM 2011. [DOI: 10.1080/0144235x.2011.581000] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Gao S, Mo Y. Ion-pair dissociation dynamics of H2S in the photon energy range 15.26-15.55 eV. J Phys Chem A 2011; 115:1781-6. [PMID: 21344893 DOI: 10.1021/jp108808w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The H(+) velocity map images from the ion-pair dissociation of H(2)S + hν → SH(-)(X(1)Σ(+), υ = 0, 1) + H(+) have been measured at the excitation energies 15.259, 15.395, and 15.547 eV, respectively. The experimental results show that most of the available energies are transformed into the translational energies. The angular distributions of the fragments SH(-)(X(1)Σ(+), υ = 0) indicate that the dissociation occurs via pure parallel transition with limiting anisotropy parameter of +2. Because the ion-pair dissociation usually occurs via the predissociation of Rydberg states, this suggests that the ion cores of the excited Rydberg states have linear geometries. The geometries and electronic structures of the linear H(2)S(+) have been calculated employing the quantum chemistry calculation method at the CASPT2/avqz level. The electronic structures for the ion-pair states have been calculated at the CASSCF/avtz level, which indicates that the equilibrium geometries of the ion-pair states have bent geometries.
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Affiliation(s)
- Shumin Gao
- Department of Physics and Key Laboratory for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China
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18
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Elkharrat C, Picard YJ, Billaud P, Cornaggia C, Garzella D, Perdrix M, Houver JC, Lucchese RR, Dowek D. Ion Pair Formation in Multiphoton Excitation of NO2 Using Linearly and Circularly Polarized Femtosecond Light Pulses: Kinetic Energy Distribution and Fragment Recoil Anisotropy. J Phys Chem A 2010; 114:9902-18. [DOI: 10.1021/jp103672h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. Elkharrat
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - Y. J. Picard
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - P. Billaud
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - C. Cornaggia
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - D. Garzella
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - M. Perdrix
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - J. C. Houver
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - R. R. Lucchese
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
| | - D. Dowek
- Institut des Sciences Moléculaires d’Orsay, UMR8214 Univ Paris-Sud et CNRS, Bat. 350, F-91405 Orsay Cedex, France, Service Photons Atomes & Molécules, CEA IRAMIS, Service des Photons, Atomes et Molécules, Saclay, Bat. 522, F-91191 Gif-sur-Yvette, France, and Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255
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Demekhin PV, Sukhorukov VL, Schmoranzer H, Ehresmann A. Neutral dissociation of the I, I′, and I″ vibronic progressions of O2. J Chem Phys 2010; 132:204303. [PMID: 20515091 DOI: 10.1063/1.3432199] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Ph V Demekhin
- Institute of Physics and CINSaT, University of Kassel, D-34132 Kassel, Germany.
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20
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Rogers N, Simpson M, Tuckett R, Dunn K, Latimer C. Vacuum-UV negative photoion spectroscopy of CH4. Mol Phys 2010. [DOI: 10.1080/00268970903535483] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Rogers NJ, Simpson MJ, Tuckett RP, Dunn KF, Latimer CJ. Vacuum-UV negative photoion spectroscopy of CH3F, CH3Cl and CH3Br. Phys Chem Chem Phys 2010; 12:10971-80. [DOI: 10.1039/c0cp00234h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Baklanov AV, Janssen LMC, Parker DH, Poisson L, Soep B, Mestdagh JM, Gobert O. Direct mapping of recoil in the ion-pair dissociation of molecular oxygen by a femtosecond depletion method. J Chem Phys 2008; 129:214306. [PMID: 19063560 DOI: 10.1063/1.3026613] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Time-resolved dynamics of the photodissociation of molecular oxygen, O(2), via the (3)Sigma(u) (-) ion-pair state have been studied with femtosecond time resolution using a pump-probe scheme in combination with velocity map imaging of the resulting O(+) and O(-) ions. The fourth harmonic of a femtosecond titanium-sapphire (Ti:sapphire) laser (lambda approximately 205 nm) was found to cause three-photon pumping of O(2) to a level at 18.1 eV. The parallel character of the observed O(+) and O(-) images allowed us to conclude that dissociation takes place on the (3)Sigma(u) (-) ion-pair state. The 815 nm fundamental of the Ti:sapphire laser used as probe was found to cause two-photon electron photodetachment starting from the O(2) ion-pair state, giving rise to (O((3)P)+O(+)((4)S)) products. This was revealed by the observed depletion of the yield of the O(-) anion and the appearance of a new O(+) cation signal with a kinetic energy E(transl)(O(+)) dependent on the time delay between the pump and probe lasers. This time-delay dependence of the dissociation dynamics on the ion-pair state has also been simulated, and the experimental and simulated results coincide very well over the experimental delay-time interval from about 130 fs to 20 ps where two- or one-photon photodetachment takes place, corresponding to a change in the R(O(+),O(-)) interatomic distance from 12 to about 900 A. This is one of the first implementations of a depletion scheme in femtosecond pump-probe experiments which could prove to be quite versatile and applicable to many femtosecond time-scale experiments.
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Affiliation(s)
- Alexey V Baklanov
- Institute of Chemical Kinetics and Combustion, Institutskaja St. 3, Novosibirsk 630090, Russia and Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia
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23
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Song D, Liu K, Kong F, Xia A. Neutral dissociation of methane in the ultra-fast laser pulse. Sci Bull (Beijing) 2008. [DOI: 10.1007/s11434-008-0232-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Simpson MJ, Tuckett RP, Dunn KF, Hunniford CA, Latimer CJ, Scully SWJ. Vacuum-UV negative photoion spectroscopy of SF5CF3. J Chem Phys 2008; 128:124315. [DOI: 10.1063/1.2894869] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lago AF, Dávalos JZ, Kerdpin U, Schlachter AS. Cationic and Anionic Fragmentation of Dichloromethane following Inner-Shell (Cl 1s) Photoexcitation. J Phys Chem A 2006; 110:13717-23. [PMID: 17181326 DOI: 10.1021/jp063423h] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The cationic and anionic fragmentation of dichloromethane (CH2Cl2) molecule have been investigated in the energy range of the Cl K shell by using synchrotron radiation, ion yield spectroscopy, and electron-ion coincidence spectroscopy. Total and partial ion-yield and mass spectra have been recorded as a function of the photon energy. We were able to identify several singly and multiply charged cationic fragments and the following anionic species: H-; C-; Cl-. The present results provide the first experimental report of negative ion formation from a molecule excited at the Cl 1s edge. In addition, our electron-ion coincidence data provide strong evidence of the preservation of molecular alignment for the photodissociation of CH2Cl2 after deep core-electron resonant excitation.
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Affiliation(s)
- A F Lago
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599-3290, USA.
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27
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Abstract
Ion pair dissociation processes may be studied using coherent vacuum ultraviolet laser sources in a manner entirely analogous to photoelectron spectroscopy, albeit with the anion playing the role of a heavy electron. If the excitation energy is above the dissociation energy and the kinetic energy of the fragment is measured using ion imaging, this approach is termed ion pair imaging spectroscopy (IPIS) and is related to conventional photoelectron spectroscopy. If the excitation energy is just below the dissociation energy and pulsed-field dissociation is employed, this approach is analogous to mass analyzed threshold ionization (MATI) spectroscopy and is termed threshold ion pair production spectroscopy (TIPPS). These approaches provide a novel means of investigating ion thermochemistry and spectroscopy and superexcited state decay dynamics at high resolution.
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Affiliation(s)
- Arthur G Suits
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
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28
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Hao Y, Zhou C, Mo Y. Velocity map imaging study of the O2 ion-pair production at 17.499 eV: simultaneous parallel and perpendicular transitions. J Phys Chem A 2005; 109:5832-5. [PMID: 16833917 DOI: 10.1021/jp0519262] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The fine structure resolved photofragment O(-)((2)P(j)) image from the O(2) ion-pair production at 17.499 eV has been recorded. The branching ratio for producing the low energy spin-orbit O(-)((2)P(3/2)) component to the high energy spin-orbit O(-)((2)P(1/2)) component is 1:0.78 and the optical transitions for them correspond to perpendicular and parallel transitions, respectively. The anisotropy parameters, 1.64 for channel producing O(-)((2)P(1/2)) and -0.35 for O(-)((2)P(3/2)), suggest that the dissociation proceeds via the states with symmetry (3)Sigma(u)(-) and (3)Pi(u), respectively. Although the main mechanisms for the O(2) ion-pair production are the predissociation via the intermediate Rydberg states, the direct dissociation mechanism for the channel producing O(-)((2)P(1/2)) may also be involved.
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Affiliation(s)
- Yusong Hao
- Department of Physics and Key Laboratory for Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China
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29
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Herrmann A, Leutwyler S, Schumacher E, Wöste L. On Metal-Atom Clusters IV. Photoionization thresholds and multiphoton ionization spectra of alkali-metal molecules. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19780610141] [Citation(s) in RCA: 144] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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30
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Ruscic B, Pinzon RE, Morton ML, von Laszevski G, Bittner SJ, Nijsure SG, Amin KA, Minkoff M, Wagner AF. Introduction to Active Thermochemical Tables: Several “Key” Enthalpies of Formation Revisited. J Phys Chem A 2004. [DOI: 10.1021/jp047912y] [Citation(s) in RCA: 503] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Branko Ruscic
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Reinhardt E. Pinzon
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Melita L. Morton
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Gregor von Laszevski
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Sandra J. Bittner
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Sandeep G. Nijsure
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Kaizar A. Amin
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Michael Minkoff
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Albert F. Wagner
- Chemistry Division and Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois 60439
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31
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Liu N. Effects of photoionization on propagation and branching of positive and negative streamers in sprites. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003ja010064] [Citation(s) in RCA: 212] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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O’Keeffe P, Ridley T, Lawley KP, Donovan RJ, Telle HH, Beddows DCS, Urena AG. An optical–optical double resonance study of the perturbed O2 d3sσg(1Πg) Rydberg state excited via single rotational levels of the b(1Σg+) valence state. J Chem Phys 2000. [DOI: 10.1063/1.482031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Bakker BLG, Parker DH, Samartzis PC, Kitsopoulos TN. Nonresonant photofragmentation/ionization dynamics of O2 using picosecond and femtosecond laser pulses at 248 nm. J Chem Phys 2000. [DOI: 10.1063/1.481140] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Song Y, Evans M, Ng CY, Hsu CW, Jarvis GK. Rotationally resolved pulsed field ionization photoelectron bands of O2+(X 2Π1/2,3/2g, v+=0–38) in the energy range of 12.05–18.15 eV. J Chem Phys 1999. [DOI: 10.1063/1.479459] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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36
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Šiller L, Hedhili MN, Le Coat Y, Azria R, Tronc M. Electron stimulated desorption from solid CO2 and a hydrogen containing CO2 matrix: A comparative study. J Chem Phys 1999. [DOI: 10.1063/1.478987] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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37
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Yousif FB, Lindsay BG, Simpson FR, Latimer CJ. Dissociative ionisation and charge transfer in He+-O2collisions. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/20/19/018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Hayaishi T, Iida Y, Morioka Y, Sasanuma M, Ishiguro E, Nakamura M. Photoionisation mass spectrometry of O2in the VUV region. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/19/18/016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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39
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Lippa TP, Xu SJ, Lyapustina SA, Nilles JM, Bowen KH. Photoelectron spectroscopy of As−, As2−, As3−, As4−, and As5−. J Chem Phys 1998. [DOI: 10.1063/1.477771] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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40
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Lippa TP, Xu SJ, Lyapustina SA, Bowen KH. Negative ion photoelectron spectroscopy of the AsO− anion. J Chem Phys 1998. [DOI: 10.1063/1.477586] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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41
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Martin JDD, Hepburn JW. Determination of bond dissociation energies by threshold ion-pair production spectroscopy: An improved D0(HCl). J Chem Phys 1998. [DOI: 10.1063/1.477476] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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42
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Fancher CA, de Clercq HL, Thomas OC, Robinson DW, Bowen KH. Zinc oxide and its anion: A negative ion photoelectron spectroscopic study. J Chem Phys 1998. [DOI: 10.1063/1.477505] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Barr JD, De Fanis A, Dyke JM, Gamblin SD, Morris A, Stranges S, West JB, Wright TG, Wright AE. A study of O2(a 1Δg) with photoelectron spectroscopy using synchrotron radiation. J Chem Phys 1998. [DOI: 10.1063/1.476872] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Evans M, Stimson S, Ng CY, Hsu CW. High-resolution pulsed field ionization photoelectron study of O2: Predissociation lifetimes and high-n Rydberg lifetimes converging to O2+(c 4Σu−, v+=0,1). J Chem Phys 1998. [DOI: 10.1063/1.476678] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Parker DH, Eppink ATJB. Photoelectron and photofragment velocity map imaging of state-selected molecular oxygen dissociation/ionization dynamics. J Chem Phys 1997. [DOI: 10.1063/1.474624] [Citation(s) in RCA: 204] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Jones A, Blake A, Torop L, McCoy D. An investigation of the photodissociation of molecular oxygen in the 75 to 85 nm region. Chem Phys 1996. [DOI: 10.1016/0301-0104(96)00155-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Glab WL, Dehmer PM, Dehmer JL. Spin–orbit branching ratios for photoionization of the 3dπ gerade states of O2: Evidence for preferential ionization of the Ωc=3/2 core states. J Chem Phys 1996. [DOI: 10.1063/1.471126] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Siller L, Bennett SL, MacDonald MA, Bennett RA, Palmer RE, Foord JS. Surface enhanced photodissociation of physisorbed molecules. PHYSICAL REVIEW LETTERS 1996; 76:1960-1963. [PMID: 10060564 DOI: 10.1103/physrevlett.76.1960] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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49
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Doering J, Yang J, Cooper J. Observation of autoionization in O2 by an electron-electron coincidence method. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(94)01323-n] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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50
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Dobber MR, Buma WJ, de Lange CA. (3+1) resonance enhanced multiphoton ionization photoelectron spectroscopy on nf Rydberg states of carbon dioxide. J Chem Phys 1994. [DOI: 10.1063/1.467961] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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