Photophysics of indole upon x-ray absorption

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 imag...

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Bibliographic Details
Published in:arXiv.org 2018-07
Main Authors: Kierspel, Thomas, Bomme, Cédric, Michele Di Fraia, Wiese, Joss, Anielski, Denis, Bari, Sadia, Boll, Rebecca, Erk, Benjamin, Kienitz, Jens S, Müller, Nele L M, Rolles, Daniel, Viefhaus, Jens, Trippel, Sebastian, Küpper, Jochen
Format: Article
Language:English
Subjects:
Angular velocity
Electrons
Fragmentation
Ionization
Nitrogen
Photoelectrons
Recoil
X ray absorption
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1802.02964