Emitter-site selective photoelectron circular dichroism of trifluoromethyloxirane

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.

References in corpus (1)

• Relaxation Dynamics in Photoexcited Chiral Molecules Studied by Time-Resolved Photoelectron Circular Dichroism: Toward Chiral Femtochemistry

Cited by in corpus (12)

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• Maximum Elliptical Dichroism in Atomic Two-Photon Ionization
• Propensity rules in photoelectron circular dichroism in chiral molecules II: General picture
• Time-resolved chiral X-Ray photoelectron spectroscopy with transiently enhanced atomic site-selectivity: a Free Electron Laser investigation of electronically excited fenchone enantiomers
• Photoelectron circular dichroism of O 1$s$-photoelectrons of uniaxially oriented trifluoromethyloxirane: Energy dependence and sensitivity to molecular configuration
• Photoelectron circular dichroism in the multiphoton ionization by short laser pulses: II. Three- and four-photon ionization of fenchone and camphor
• Recovery of high-energy photoelectron circular dichroism through Fano interference
• Photoelectron Circular Dichroism of a Model Anionic System
• Coherent X-rays with Tunable Time-Dependent Polarization
• Closed-loop recycling of rare liquid samples for gas-phase experiments