Photophysics of indole upon X-ray absorption

Physical Chemistry Chemical Physics : PCCP
Thomas KierspelJochen Küpper

Abstract

A photofragmentation study of gas-phase indole (C8H7N) 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.

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Citations

Mar 24, 2021·The Journal of Chemical Physics·Marius GerlachIngo Fischer
May 8, 2021·The Journal of Physical Chemistry. a·Aurora PonziOksana Plekan
Apr 25, 2020·The Journal of Physical Chemistry. a·Oksana PlekanAurora Ponzi
Jul 19, 2019·The Journal of Physical Chemistry. a·Helen BiekerJochen Küpper

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