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

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

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Publication Article, peer reviewed scientific
Title Negative- and positive-ion fragmentation of core-excited formic-acid molecules studied with three- and four-ion coincidence spectroscopy
Author Stråhlman, Christian ; Kivimäki, Antti ; Richter, Robert ; Sankari, Rami
Date 2017
English 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.
DOI https://doi.org/10.1103/PhysRevA.96.023409 (link to publisher's fulltext.)
Publisher American Physical Society
Host/Issue Physical Review A;2
Volume 96
ISSN 2469-9926
Pages 023409
Language eng (iso)
Subject spectroscopy
molecular physics
synchrotron radiation
time-of-flight
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/23262 Permalink to this page
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