1
|
Iskandar W, Rescigno TN, Orel AE, Severt T, Larsen KA, Streeter ZL, Jochim B, Griffin B, Call D, Davis V, McCurdy CW, Lucchese RR, Williams JB, Ben-Itzhak I, Slaughter DS, Weber T. Efficiency of charge transfer in changing the dissociation dynamics of OD+ transients formed after the photo-fragmentation of D2O. J Chem Phys 2023; 159:094301. [PMID: 37668253 DOI: 10.1063/5.0159300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/07/2023] [Indexed: 09/06/2023] Open
Abstract
We present an investigation of the relaxation dynamics of deuterated water molecules after direct photo-double ionization at 61 eV. We focus on the very rare D+ + O+ + D reaction channel in which the sequential fragmentation mechanisms were found to dominate the dynamics. Aided by theory, the state-selective formation and breakup of the transient OD+(a1Δ, b1Σ+) is traced, and the most likely dissociation path-OD+: a1Δ or b1Σ+ → A 3Π → X 3Σ- → B 3Σ--involving a combination of spin-orbit and non-adiabatic charge transfer transitions is determined. The multi-step transition probability of this complex transition sequence in the intermediate fragment ion is directly evaluated as a function of the energy of the transient OD+ above its lowest dissociation limit from the measured ratio of the D+ + O+ + D and competing D+ + D+ + O sequential fragmentation channels, which are measured simultaneously. Our coupled-channel time-dependent dynamics calculations reproduce the general trends of these multi-state relative transition rates toward the three-body fragmentation channels.
Collapse
Affiliation(s)
- W Iskandar
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - T N Rescigno
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A E Orel
- Chemical Engineering, University of California, Davis, California 95616, USA
| | - T Severt
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - K A Larsen
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Graduate Group in Applied Science and Technology, University of California, Berkeley, California 94720, USA
| | - Z L Streeter
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Davis, California 95616, USA
| | - B Jochim
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - B Griffin
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - D Call
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - V Davis
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - C W McCurdy
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Davis, California 95616, USA
| | - R R Lucchese
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J B Williams
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - I Ben-Itzhak
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - D S Slaughter
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Th Weber
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| |
Collapse
|
2
|
Guillemin R, Inhester L, Ilchen M, Mazza T, Boll R, Weber T, Eckart S, Grychtol P, Rennhack N, Marchenko T, Velasquez N, Travnikova O, Ismail I, Niskanen J, Kukk E, Trinter F, Gisselbrecht M, Feifel R, Sansone G, Rolles D, Martins M, Meyer M, Simon M, Santra R, Pfeifer T, Jahnke T, Piancastelli MN. Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser. Struct Dyn 2023; 10:054302. [PMID: 37799711 PMCID: PMC10550338 DOI: 10.1063/4.0000197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 09/05/2023] [Indexed: 10/07/2023]
Abstract
Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coincidence. By combining experimental results and theoretical modeling, we identify significant structural dynamics with characteristic isotope effects in H2O2+, D2O2+, and HDO2+, such as asymmetric bond elongation and bond-angle opening, leading to two-body or three-body fragmentation on a timescale of a few femtoseconds. A method to disentangle the sequences of events taking place upon the consecutive absorption of two x-ray photons is described. The obtained deep look into structural properties and dynamics of dissociating water isotopologues provides essential insights into the underlying mechanisms.
Collapse
Affiliation(s)
- R. Guillemin
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - L. Inhester
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - T. Mazza
- European XFEL, 22869 Schenefeld, Germany
| | - R. Boll
- European XFEL, 22869 Schenefeld, Germany
| | - Th. Weber
- Lawrence Berkeley National Laboratory, Chemical Sciences, Berkeley, California 94720, USA
| | - S. Eckart
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt am Main, Germany
| | | | | | - T. Marchenko
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - N. Velasquez
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - O. Travnikova
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - I. Ismail
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | - J. Niskanen
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - E. Kukk
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | | | | | - R. Feifel
- Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
| | - G. Sansone
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - D. Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - M. Martins
- Institut für Experimentalphysik, Universität Hamburg, 22761 Hamburg, Germany
| | - M. Meyer
- European XFEL, 22869 Schenefeld, Germany
| | - M. Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| | | | - T. Pfeifer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - T. Jahnke
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M. N. Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, 75005 Paris, France
| |
Collapse
|
3
|
Howard AJ, Britton M, Streeter ZL, Cheng C, Forbes R, Reynolds JL, Allum F, McCracken GA, Gabalski I, Lucchese RR, McCurdy CW, Weinacht T, Bucksbaum PH. Filming enhanced ionization in an ultrafast triatomic slingshot. Commun Chem 2023; 6:81. [PMID: 37106058 PMCID: PMC10140156 DOI: 10.1038/s42004-023-00882-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Filming atomic motion within molecules is an active pursuit of molecular physics and quantum chemistry. A promising method is laser-induced Coulomb Explosion Imaging (CEI) where a laser pulse rapidly ionizes many electrons from a molecule, causing the remaining ions to undergo Coulomb repulsion. The ion momenta are used to reconstruct the molecular geometry which is tracked over time (i.e., filmed) by ionizing at an adjustable delay with respect to the start of interatomic motion. Results are distorted, however, by ultrafast motion during the ionizing pulse. We studied this effect in water and filmed the rapid "slingshot" motion that enhances ionization and distorts CEI results. Our investigation uncovered both the geometry and mechanism of the enhancement which may inform CEI experiments in many other polyatomic molecules.
Collapse
Affiliation(s)
- Andrew J Howard
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
| | - Mathew Britton
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Physics, Stanford University, Stanford, CA, 94305, USA
| | - Zachary L Streeter
- Department of Chemistry, University of California, Davis, Davis, CA, 95616, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Chuan Cheng
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Ruaridh Forbes
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Joshua L Reynolds
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - Felix Allum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Gregory A McCracken
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Ian Gabalski
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Robert R Lucchese
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - C William McCurdy
- Department of Chemistry, University of California, Davis, Davis, CA, 95616, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Thomas Weinacht
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Philip H Bucksbaum
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
- Department of Physics, Stanford University, Stanford, CA, 94305, USA.
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
| |
Collapse
|
4
|
Severt T, Streeter ZL, Iskandar W, Larsen KA, Gatton A, Trabert D, Jochim B, Griffin B, Champenois EG, Brister MM, Reedy D, Call D, Strom R, Landers AL, Dörner R, Williams JB, Slaughter DS, Lucchese RR, Weber T, McCurdy CW, Ben-Itzhak I. Step-by-step state-selective tracking of fragmentation dynamics of water dications by momentum imaging. Nat Commun 2022; 13:5146. [PMID: 36050308 DOI: 10.1038/s41467-022-32836-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 08/17/2022] [Indexed: 11/22/2022] Open
Abstract
The double photoionization of a molecule by one photon ejects two electrons and typically creates an unstable dication. Observing the subsequent fragmentation products in coincidence can reveal a surprisingly detailed picture of the dynamics. Determining the time evolution and quantum mechanical states involved leads to deeper understanding of molecular dynamics. Here in a combined experimental and theoretical study, we unambiguously separate the sequential breakup via D+ + OD+ intermediates, from other processes leading to the same D+ + D+ + O final products of double ionization of water by a single photon. Moreover, we experimentally identify, separate, and follow step by step, two pathways involving the b 1Σ+ and a 1Δ electronic states of the intermediate OD+ ion. Our classical trajectory calculations on the relevant potential energy surfaces reproduce well the measured data and, combined with the experiment, enable the determination of the internal energy and angular momentum distribution of the OD+ intermediate. Determining the time evolution of reactions at the quantum mechanical level improves our understanding of molecular dynamics. Here, authors separate the breakup of water, one bond at a time, from other processes leading to the same final products and experimentally identify, separate, and follow step by step two breakup paths of the transient OD+ fragment.
Collapse
|
5
|
Abstract
Two-body dissociation resulting from strong-field double ionization of water is investigated. Two distinct features are seen in the alignment of the fragment momenta with respect to the laser polarization. One feature shows alignment of the H-OH axis with the laser polarization, while the other indicates polarization alignment normal to the H-OH axis. By analyzing kinematic differences between the OH+/D+ and OD+/H+ channels of HOD, these two alignment features are shown to result from dissociation from different states in the dication. Only dissociation from one of these states has an alignment dependence consistent with predictions of sequential strong-field tunneling ionization models. The alignment dependence of dissociation from the other state can only be explained by dynamic alignment launched by the unbending of the molecule during ionization.
Collapse
Affiliation(s)
- Gregory A McCracken
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Philip H Bucksbaum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| |
Collapse
|
6
|
Sankari A, Stråhlman C, Sankari R, Partanen L, Laksman J, Kettunen JA, Galván IF, Lindh R, Malmqvist PÅ, Sorensen SL. Non-radiative decay and fragmentation in water molecules after 1a1−14a1 excitation and core ionization studied by electron-energy-resolved electron–ion coincidence spectroscopy. J Chem Phys 2020; 152:074302. [DOI: 10.1063/1.5141414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Anna Sankari
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
- Department of Theoretical Chemistry, Lund University, Chemical Center, P.O. Box 124, S-22100 Lund, Sweden
| | - Christian Stråhlman
- Department of Materials Science and Applied Mathematics, Malmö University, S-20506 Malmö, Sweden
- MAX IV Laboratory, Lund University, P.O. Box 118, S-22100 Lund, Sweden
| | - Rami Sankari
- MAX IV Laboratory, Lund University, P.O. Box 118, S-22100 Lund, Sweden
- Department of Physics, Tampere University of Technology, P.O. Box 692, FIN-33101 Tampere, Finland
| | - Leena Partanen
- Department of Physics, Tampere University of Technology, P.O. Box 692, FIN-33101 Tampere, Finland
- Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu, Finland
| | - Joakim Laksman
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
- MAX IV Laboratory, Lund University, P.O. Box 118, S-22100 Lund, Sweden
| | - J. Antti Kettunen
- Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu, Finland
| | - Ignacio Fdez. Galván
- Department of Chemistry – BMC, Uppsala University, P.O. Box 576, S-75123 Uppsala, Sweden
| | - Roland Lindh
- Department of Chemistry – BMC, Uppsala University, P.O. Box 576, S-75123 Uppsala, Sweden
| | - Per-Åke Malmqvist
- Department of Theoretical Chemistry, Lund University, Chemical Center, P.O. Box 124, S-22100 Lund, Sweden
| | - Stacey L. Sorensen
- Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden
| |
Collapse
|
7
|
Affiliation(s)
- Takahide Matsuoka
- Fukui Institute for Fundamental Chemistry, Kyoto University, Sakyo-ku, Kyoto 606-8103, Japan
| | - Kazuo Takatsuka
- Fukui Institute for Fundamental Chemistry, Kyoto University, Sakyo-ku, Kyoto 606-8103, Japan
| |
Collapse
|
8
|
Abstract
We have studied strong-field enhanced dissociative ionization of D2O in 40 fs, 800 nm laser pulses with focused intensities of <1-3 × 1015W/cm2 by resolving the charged fragment momenta with respect to the laser polarization. We that observe dication dissociation into OD+/D+ dominates when the polarization is out of the plane of the molecule, whereas trication dissociation into O+/D+/D+ is strongly dominant when the polarization is aligned along the D-D axis. Dication dissociation into O/D+/D+ and O+/D2+ is not seen nor is there any significant fragmentation into multiple ions when the laser is polarized along the C2v symmetry axis of the molecule. Even below the saturation intensity for OD+/D+, the O+/D+/D+ channel has higher yield. By analyzing how the laser field is oriented within the molecular frame for both channels, we show that enhanced ionization is driving the triply charged three body breakup but is not active for the doubly charged two body breakup. We conclude that laser-induced distortion of the molecular potential suppresses multiple ionization along the C2v axis but enhances ionization along the D-D direction.
Collapse
Affiliation(s)
- Gregory A McCracken
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Andreas Kaldun
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Chelsea Liekhus-Schmaltz
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Philip H Bucksbaum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| |
Collapse
|
9
|
Abstract
Preferential breaking of chemical bonds using few-cycle, intense laser pulse to obtain desired products offer a formidable challenge in understanding ultrafast chemical reactivity. In a recent study [J. Chem. Phys. 2015, 143, 244310], it was found that carrier-envelope phase influences the bond-selective fragmentation in HOD with up to 3-fold enhancement. We present a detailed theoretical study to understand the influence of initial vibrational states governing the dissociation dynamics. We have carried out a time-dependent quantum mechanical wave packet study on the ground electronic state (X̃ (3)B1) of HOD(2+). Analytical potential energy surface for the ground electronic states of both the neutral molecule and dication has been developed at multireference configuration interaction level of theory with aug-cc-pVQZ basis set. Branching ratio is computed from the accumulated flux in H(+) + OD(+) and D(+) + OH(+) dissociation channels. Our investigation demonstrate a strong dependency on the initial conditions, and thereby preferential cleavage of bonds can be achieved. We have also compared our results with experimental and other theoretical studies.
Collapse
Affiliation(s)
- Diptesh Dey
- Indian Institute of Science Education and Research Kolkata , Mohanpur 741246, India
| | - Ashwani K Tiwari
- Indian Institute of Science Education and Research Kolkata , Mohanpur 741246, India
| |
Collapse
|
10
|
Martin S, Chen L, Brédy R, Bernard J, Cassimi A. Fragmentation of doubly charged HDO, H2O, and D2O molecules induced by proton and monocharged fluorine beam impact at 3 keV. J Chem Phys 2015; 142:094306. [PMID: 25747080 DOI: 10.1063/1.4913398] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Doubly charged ions HDO(2+), H2O(2+), and D2O(2+) were prepared selectively to triplet or singlet excited states in collisions with F(+) or H(+) projectiles at 3 keV. Excitation energies of dications following two-body or three-body dissociation channels were measured and compared with recent calculations using ab initio multi-reference configuration interaction method [Gervais et al., J. Chem. Phys. 131, 024302 (2009)]. For HDO(2+), preferential cleavage of O-H rather than O-D bond has been observed and the ratio between the populations of the fragmentation channels OD(+)_H(+) and OH(+)_D(+) were measured. The kinetic energy release has been measured and compared with previous experiments.
Collapse
Affiliation(s)
- S Martin
- Institut Lumière Matière, UMR5306 Université Claude Bernard Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne Cedex, France
| | - L Chen
- Institut Lumière Matière, UMR5306 Université Claude Bernard Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne Cedex, France
| | - R Brédy
- Institut Lumière Matière, UMR5306 Université Claude Bernard Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne Cedex, France
| | - J Bernard
- Institut Lumière Matière, UMR5306 Université Claude Bernard Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne Cedex, France
| | - A Cassimi
- CIMAP, GANIL Université de CAEN, Bd. H. Becquerel, Caen, France
| |
Collapse
|
11
|
Hikosaka Y, Sawa M, Nakano M, Soejima K, Lablanquie P, Penent F, Ito K. Electron reemission processes following photoelectron recapture due to post-collision interaction in inner-shell photoionization of water molecules. J Chem Phys 2014; 138:214308. [PMID: 23758372 DOI: 10.1063/1.4808028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Electron reemission following photoelectron recapture due to post-collision interaction has been studied at 0.7 eV the inner-shell photoionization threshold of water molecules, using a multi-electron coincidence method. Electron reemissions after single Auger decay occur from O and OH fragments which are produced by the dissociations of high-n Rydberg H2O(+) states populated through photoelectron recapture. In addition, electron reemissions after double Auger decay are identified in triple coincidence events, where autoionization lines from O and O(+) fragments are observed.
Collapse
Affiliation(s)
- Y Hikosaka
- Department of Environmental Science, Niigata University, Niigata 950-2181, Japan.
| | | | | | | | | | | | | |
Collapse
|
12
|
Laksman J, Månsson EP, Sankari A, Céolin D, Gisselbrecht M, Sorensen SL. Rapid bond rearrangement in core-excited molecular water. Phys Chem Chem Phys 2013; 15:19322-9. [DOI: 10.1039/c3cp52625a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|