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Emitter-site selective photoelectron circular dichroism of trifluoromethyloxirane
- Source :
- Phys. Rev. A 95, 053423 (2017)
- Publication Year :
- 2017
-
Abstract
- The angle-resolved inner-shell photoionization of R-trifluoromethyloxirane, C3H3F3O, is studied experimentally and theoretically. Thereby, we investigate the photoelectron circular dichroism (PECD) for nearly-symmetric O 1s and F 1s electronic orbitals, which are localized on different molecular sites. The respective dichroic $\beta_{1}$ and angular distribution $\beta_{2}$ parameters are measured at the photoelectron kinetic energies from 1 to 16 eV by using variably polarized synchrotron radiation and velocity map imaging spectroscopy. The present experimental results are in good agreement with the outcome of ab initio electronic structure calculations. We report a sizable chiral asymmetry $\beta_{1}$ of up to about 9% for the K-shell photoionization of oxygen atom. For the individual fluorine atoms, the present calculations predict asymmetries of similar size. However, being averaged over all fluorine atoms, it drops down to about 2%, as also observed in the present experiment. Our study demonstrates a strong emitter- and site-sensitivity of PECD in the one-photon inner-shell ionization of this chiral molecule.
- Subjects :
- Physics - Chemical Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. A 95, 053423 (2017)
- Publication Type :
- Report
- Accession number :
- edsarx.1704.02265
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevA.95.053423