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Negative- and positive-ion fragmentation of core-excited formic-acid molecules studied with three- and four-ion coincidence spectroscopy

Stråhlman, Christian LU ; Kivimäki, Antti LU ; Richter, Robert and Sankari, Rami LU (2017) In Physical Review A 96(2).
Abstract

The negative-ion fragmentation of formic acid (HCOOH) is studied with negative- and positive-ion coincidence spectroscopy. We report four-body ionic fragmentation where up to three positive ions are collected in coincidence with one negative ion. We report yields for 21 three-body channels and five four-body channels. More than 80% of all negative-ion fragmentation involves production of O-, and it is dominated by complete dissociation of all molecular bonds. Negative-ion creation is most abundant at high-Rydberg resonances and just above the molecule's core-ionization potentials. The existence of four-body fragmentation channels evidences a strong charge redistribution in the molecule.

Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A
volume
96
issue
2
article number
023409
publisher
American Physical Society
external identifiers
  • wos:000407096700003
  • scopus:85028674397
ISSN
2469-9926
DOI
10.1103/PhysRevA.96.023409
language
English
LU publication?
yes
id
3bda369a-3dd2-4b5b-8fc6-1b7dd5c01165
date added to LUP
2017-09-27 10:38:40
date last changed
2025-01-07 21:18:36
@article{3bda369a-3dd2-4b5b-8fc6-1b7dd5c01165,
  abstract     = {{<p>The negative-ion fragmentation of formic acid (HCOOH) is studied with negative- and positive-ion coincidence spectroscopy. We report four-body ionic fragmentation where up to three positive ions are collected in coincidence with one negative ion. We report yields for 21 three-body channels and five four-body channels. More than 80% of all negative-ion fragmentation involves production of O-, and it is dominated by complete dissociation of all molecular bonds. Negative-ion creation is most abundant at high-Rydberg resonances and just above the molecule's core-ionization potentials. The existence of four-body fragmentation channels evidences a strong charge redistribution in the molecule.</p>}},
  author       = {{Stråhlman, Christian and Kivimäki, Antti and Richter, Robert and Sankari, Rami}},
  issn         = {{2469-9926}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review A}},
  title        = {{Negative- and positive-ion fragmentation of core-excited formic-acid molecules studied with three- and four-ion coincidence spectroscopy}},
  url          = {{http://dx.doi.org/10.1103/PhysRevA.96.023409}},
  doi          = {{10.1103/PhysRevA.96.023409}},
  volume       = {{96}},
  year         = {{2017}},
}