Photophysics of indole upon X-ray absorption
Abstract
A photofragmentation study of gas-phase indole (C$_8$H$_7$N) upon single-photon ionization at a photon energy of 420 eV is presented. Indole was primarily inner-shell ionized at its nitrogen and carbon $1s$ orbitals. Electrons and ions were measured in coincidence by means of velocity map imaging. The angular relationship between ionic fragments is discussed along with the possibility to use the angle-resolved coincidence detection to perform experiments on molecules that are strongly oriented in their recoil-frame. The coincident measurement of electrons and ions revealed fragmentation-pathway-dependent electron spectra, linking the structural fragmentation dynamics to different electronic excitations. Evidence for photoelectron-impact self-ionization was observed.
- Publication:
-
Physical Chemistry Chemical Physics (Incorporating Faraday Transactions)
- Pub Date:
- 2018
- DOI:
- 10.1039/C8CP00936H
- arXiv:
- arXiv:1802.02964
- Bibcode:
- 2018PCCP...2020205K
- Keywords:
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- Physics - Atomic and Molecular Clusters;
- Physics - Atomic Physics;
- Physics - Chemical Physics
- E-Print:
- 11 pages, 6 figures