Published in
Nature Research, Scientific Reports, 1(6), 2016
DOI: 10.1038/srep38202
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Identification of absolute geometries of cis and trans molecular isomers by Coulomb Explosion Imaging
,
Balram Kaderiya,
Sven Augustin,
Kirsten Schnorr ,
Ileana Dumitriu,
René Bilodeau,
Timur Osipov,
David Kilcoyne,
Vinod Kumarappan,
Artem Rudenko ,
Nora Berrah
and other authors.
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Abstract
SeriesInformation ; Scientific reports 6, 38202 (2016). doi:10.1038/srep38202 ; Abstract ; An experimental route to identify and separate geometric isomers by means of coincident Coulomb explosion imaging is presented, allowing isomer-resolved photoionization studies on isomerically mixed samples. We demonstrate the technique on cis/trans 1,2-dibromoethene (C$_2$H$_2$Br$_2$). The momentum correlation between the bromine ions in a three-body fragmentation process induced by bromine 3d inner-shell photoionization is used to identify the cis and trans structures of the isomers. The experimentally determined momentum correlations and the isomer-resolved fragment-ion kinetic energies are matched closely by a classical Coulomb explosion model. ; Other ; Published by Nature Publishing Group, London