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arXiv · 1802.02964

Photophysics of indole upon x-ray absorption

Thomas Kierspel·Cédric Bomme·Michele Di Fraia·Joss Wiese·Denis Anielski·Sadia Bari·Rebecca Boll·Benjamin Erk·Jens S. Kienitz·Nele L. M. Müller·Daniel Rolles·Jens Viefhaus·Sebastian Trippel·Jochen Küpper
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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.

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Thomas Kierspel, Cédric Bomme, Michele Di Fraia, Joss Wiese, Denis Anielski, Sadia Bari, Rebecca Boll, Benjamin Erk, Jens S. Kienitz, Nele L. M. Müller, Daniel Rolles, Jens Viefhaus, Sebastian Trippel, Jochen Küpper. 2018-02-08. Photophysics of indole upon x-ray absorption. https://doi.org/10.1039/c8cp00936h

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