Rapid bond rearrangement in core-excited molecular water.
Laksman, Joakim LU ; Månsson, Erik LU ; Sankari, Anna LU ; Céolin, Denis LU ; Gisselbrecht, Mathieu LU
and Ristinmaa Sörensen, Stacey
LU
(2013)
In Physical Chemistry Chemical Physics
15(44).
p.19322-19329
- Abstract
- The angular anisotropy of fragments created in the dissociation of core-electron excited water molecules is studied to probe the correlation between fragmentation channels, kinematics and molecular geometry. We present fragment kinetic measurements for water molecules where the inner-shell oxygen electron is excited to the unoccupied 4a1 and 2b2 valence molecular orbitals. The kinematics of individual fragmentation channels are measured using fully three-dimensional momentum imaging of fragments. The results show that the geometry of the molecule and the kinetic energy of fragments are strongly coupled in the atomisation process. In addition we identify a fragmentation process arising from bond rearrangement evidenced by the H2(+)-O(+) ion... (More)
- The angular anisotropy of fragments created in the dissociation of core-electron excited water molecules is studied to probe the correlation between fragmentation channels, kinematics and molecular geometry. We present fragment kinetic measurements for water molecules where the inner-shell oxygen electron is excited to the unoccupied 4a1 and 2b2 valence molecular orbitals. The kinematics of individual fragmentation channels are measured using fully three-dimensional momentum imaging of fragments. The results show that the geometry of the molecule and the kinetic energy of fragments are strongly coupled in the atomisation process. In addition we identify a fragmentation process arising from bond rearrangement evidenced by the H2(+)-O(+) ion pair which is accessible for resonant excitation of the 1s electron. In all of the two-body fragmentation processes the dissociation takes place along the potential-energy surface, while atomisation reveals both dissociation along the potential surface and Coulomb explosion. The angular distribution of fragments suggests that the bond rearrangement is very rapid; likely on a sub 10 fs time scale. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4143322
- author
- Laksman, Joakim
LU
; Månsson, Erik
LU
; Sankari, Anna
LU
; Céolin, Denis
LU
; Gisselbrecht, Mathieu
LU
and Ristinmaa Sörensen, Stacey
LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Chemistry Chemical Physics
- volume
- 15
- issue
- 44
- pages
- 19322 - 19329
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000326220000027
- pmid:24121279
- scopus:84886781316
- pmid:24121279
- ISSN
- 1463-9084
- DOI
- 10.1039/c3cp52625a
- language
- English
- LU publication?
- yes
- id
- 755b0416-5e7e-4bbd-8222-1d3fed403a14 (old id 4143322)
- date added to LUP
- 2016-04-01 10:58:17
- date last changed
- 2022-01-26 04:20:10
@article{755b0416-5e7e-4bbd-8222-1d3fed403a14,
abstract = {{The angular anisotropy of fragments created in the dissociation of core-electron excited water molecules is studied to probe the correlation between fragmentation channels, kinematics and molecular geometry. We present fragment kinetic measurements for water molecules where the inner-shell oxygen electron is excited to the unoccupied 4a1 and 2b2 valence molecular orbitals. The kinematics of individual fragmentation channels are measured using fully three-dimensional momentum imaging of fragments. The results show that the geometry of the molecule and the kinetic energy of fragments are strongly coupled in the atomisation process. In addition we identify a fragmentation process arising from bond rearrangement evidenced by the H2(+)-O(+) ion pair which is accessible for resonant excitation of the 1s electron. In all of the two-body fragmentation processes the dissociation takes place along the potential-energy surface, while atomisation reveals both dissociation along the potential surface and Coulomb explosion. The angular distribution of fragments suggests that the bond rearrangement is very rapid; likely on a sub 10 fs time scale.}},
author = {{Laksman, Joakim and Månsson, Erik and Sankari, Anna and Céolin, Denis and Gisselbrecht, Mathieu and Ristinmaa Sörensen, Stacey}},
issn = {{1463-9084}},
language = {{eng}},
number = {{44}},
pages = {{19322--19329}},
publisher = {{Royal Society of Chemistry}},
series = {{Physical Chemistry Chemical Physics}},
title = {{Rapid bond rearrangement in core-excited molecular water.}},
url = {{http://dx.doi.org/10.1039/c3cp52625a}},
doi = {{10.1039/c3cp52625a}},
volume = {{15}},
year = {{2013}},
}