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Negative-Ion/Positive-Ion Coincidence Yields of Core-Excited Water

Stråhlman, Christian LU ; Kivimäki, Antti LU ; Richter, Robert and Sankari, Rami LU (2016) In The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
Abstract
We report yields of mass-resolved negative ions and positive ions measured in coincidence after core-excitation of water molecules. The analysis of negative-ion/positive-ion and negative-ion/positive-ion/positive-ion coincidence events provides new information on pathways leading to negative ion production, enhancing the present understanding of the dissociation processes of the water molecule. Dissociation following (resonant) Auger decay dominates negative ion production, but radiative decay is shown to contribute above the O 1s ionization threshold. A peak in the H-/O+ yield above the O 1s threshold is attributed to decay from doubly excited states.
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author
organization
publishing date
type
Contribution to journal
publication status
in press
subject
in
The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
publisher
The American Chemical Society
external identifiers
  • Scopus:84983274022
ISSN
1520-5215
DOI
10.1021/acs.jpca.6b06207
language
English
LU publication?
yes
id
b6ad9294-06fa-475c-bb05-7f86c6d3ca2b
date added to LUP
2016-07-22 10:15:22
date last changed
2016-11-01 14:22:14
@misc{b6ad9294-06fa-475c-bb05-7f86c6d3ca2b,
  abstract     = {We report yields of mass-resolved negative ions and positive ions measured in coincidence after core-excitation of water molecules. The analysis of negative-ion/positive-ion and negative-ion/positive-ion/positive-ion coincidence events provides new information on pathways leading to negative ion production, enhancing the present understanding of the dissociation processes of the water molecule. Dissociation following (resonant) Auger decay dominates negative ion production, but radiative decay is shown to contribute above the O 1s ionization threshold. A peak in the H-/O+ yield above the O 1s threshold is attributed to decay from doubly excited states.},
  author       = {Stråhlman, Christian and Kivimäki, Antti and Richter, Robert and Sankari, Rami},
  issn         = {1520-5215},
  language     = {eng},
  publisher    = {ARRAY(0x94ef6a0)},
  series       = {The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory},
  title        = {Negative-Ion/Positive-Ion Coincidence Yields of Core-Excited Water},
  url          = {http://dx.doi.org/10.1021/acs.jpca.6b06207},
  year         = {2016},
}