Ablikim, U.Bomme, C.Xiong, H.Savelyev, E.Obaid, R.Kaderiya, B.Augustin, S.Schnorr, K.Dumitriu, I.Osipov, T.Bilodeau, R.Kilcoyne, D.Kumarappan, VinodRudenko, ArtemBerrah, N.Rolles, Daniel2017-12-122017-12-122016-12-02http://hdl.handle.net/2097/38456Citation: Ablikim, U., Bomme, C., Xiong, H., Savelyev, E., Obaid, R., Kaderiya, B., . . . Rolles, D. (2016). Identification of absolute geometries of cis and trans molecular isomers by Coulomb Explosion Imaging. Scientific Reports, 6, 8. doi:10.1038/srep38202An 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 (C2H2Br2). 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.Attribution 4.0 International (CC BY 4.0)Photoactive Yellow Protein3-Body DissociationsGas-PhaseDynamicsIsomerizationConfigurationArticle