Advanced

Rapid bond rearrangement in molecules after core-electron excitation

Ristinmaa Sörensen, Stacey LU ; Gisselbrecht, Mathieu LU ; Laksman, Joakim LU ; Månsson, Erik LU ; Céolin, Denis LU ; Sankari, Anna LU and Afaneh, F. (2014) 28th International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC) In XXVIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2013) 488. p.012006-012006
Abstract
Experimental studies of core-excited molecules using three-dimensional multi particle momentum imaging are presented where bond rearrangement processes in dication species are analysed. The aim of the study is to understand the relation between the geometric changes associated with core-excited states and the kinetic energy released in particular molecular dissociation processes. The kinematics of individual fragmentation channels are studied by fully three-dimensional momentum imaging of fragments in coincidence. Examples are presented where the high efficiency of the instrument and the fully three-dimensional momentum capabilities are exploited to understand nuclear motion leading to bond rearrangement in core-excited states. We identify... (More)
Experimental studies of core-excited molecules using three-dimensional multi particle momentum imaging are presented where bond rearrangement processes in dication species are analysed. The aim of the study is to understand the relation between the geometric changes associated with core-excited states and the kinetic energy released in particular molecular dissociation processes. The kinematics of individual fragmentation channels are studied by fully three-dimensional momentum imaging of fragments in coincidence. Examples are presented where the high efficiency of the instrument and the fully three-dimensional momentum capabilities are exploited to understand nuclear motion leading to bond rearrangement in core-excited states. We identify bond-rearrangement processes in water, carbonyl sulphide and acetylene which are initiated in the core-excited state. In water this is evidenced by the H-2(+)/O+ ion pair, and in carbonyl sulphide the OS++C+ pair is the fingerprint of this reaction. In acetylene the H-2(+) + C-2(+) ion pair indicates a molecular geometry that changes from linear to strongly bent. We measure the angular distribution of all fragments and fragment pairs and for the bond rearrangement processes in water and in core-excited acetylene the angular distribution of fragments suggests that the bond rearrangement is very rapid. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
XXVIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2013)
volume
488
pages
012006 - 012006
publisher
IOP Publishing
conference name
28th International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC)
external identifiers
  • wos:000338432500006
  • scopus:84903716951
ISSN
1742-6596
1742-6588
DOI
10.1088/1742-6596/488/1/012006
language
English
LU publication?
yes
id
06928403-ba7f-460b-8d32-9f078510219f (old id 4602556)
date added to LUP
2014-09-04 15:39:00
date last changed
2017-09-17 03:32:43
@inproceedings{06928403-ba7f-460b-8d32-9f078510219f,
  abstract     = {Experimental studies of core-excited molecules using three-dimensional multi particle momentum imaging are presented where bond rearrangement processes in dication species are analysed. The aim of the study is to understand the relation between the geometric changes associated with core-excited states and the kinetic energy released in particular molecular dissociation processes. The kinematics of individual fragmentation channels are studied by fully three-dimensional momentum imaging of fragments in coincidence. Examples are presented where the high efficiency of the instrument and the fully three-dimensional momentum capabilities are exploited to understand nuclear motion leading to bond rearrangement in core-excited states. We identify bond-rearrangement processes in water, carbonyl sulphide and acetylene which are initiated in the core-excited state. In water this is evidenced by the H-2(+)/O+ ion pair, and in carbonyl sulphide the OS++C+ pair is the fingerprint of this reaction. In acetylene the H-2(+) + C-2(+) ion pair indicates a molecular geometry that changes from linear to strongly bent. We measure the angular distribution of all fragments and fragment pairs and for the bond rearrangement processes in water and in core-excited acetylene the angular distribution of fragments suggests that the bond rearrangement is very rapid.},
  author       = {Ristinmaa Sörensen, Stacey and Gisselbrecht, Mathieu and Laksman, Joakim and Månsson, Erik and Céolin, Denis and Sankari, Anna and Afaneh, F.},
  booktitle    = {XXVIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2013)},
  issn         = {1742-6596},
  language     = {eng},
  pages        = {012006--012006},
  publisher    = {IOP Publishing},
  title        = {Rapid bond rearrangement in molecules after core-electron excitation},
  url          = {http://dx.doi.org/10.1088/1742-6596/488/1/012006},
  volume       = {488},
  year         = {2014},
}