Rostock 2019 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 22: Posters 3: Cluster, Strong Field Physics, and Experimental Techniques
MO 22.17: Poster
Donnerstag, 14. März 2019, 16:15–18:15, S Foyer LLM
Angle-resolved Auger electron spectroscopy resulting from electron-impact ionization of molecules — •Sebastian Fuchs1, Daniel Paul1,2, Ticia Buhr1, Sándor Ricz3, and Stefan Schippers1 — 1I. Physikalisches Institut, Justus-Liebig-Universität Gießen, Germany — 2Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 3Institute for Nuclear Research, Hungarian Academy of Sciences, Debrecen, Hungary
In order to study the angle dependent interactions of polarized electrons as well as circular polarized photons with chiral molecules, an ESA-22-type electron spectrometer [1,2] in combination with an electron gun and focusing optical elements was upgraded and tested. The electron spectrometer is capable of simultaneous energy and angular analysis covering almost the entire polar angular range of emitted electrons. As test experiments, the O K-LL Auger spectra induced by 1.5-keV electron impact were measured using various gas targets (O2, CO2 and N2O). Auger electrons were detected simultaneously in the polar angular range of 15∘ to 165∘ relative to the electron beam direction. The present experimental data are compared with results from earlier experimental studies [3,4,5].
[1] S. Ricz et al., Phys. Rev. A 65, 042707 (2002).
[2] L. Ábrók et al., Nucl. Instrum. Methods B 369, 24 (2016).
[3] W. E. Moddeman et al., J. Chem. Phys. 55, 2317 (1971).
[4] A. Hiltunen et al., Nucl. Instrum. Methods B 154, 267 (1999).
[5] W. J. Griffiths et al., J. Phys. B 24, 4187 (1991).