https://doi.org/10.1140/epjd/e2019-90629-7
Regular Article
Classical Trajectory Monte Carlo simulation of coincidence experiments in electron impact ionization of helium⋆
1
Institute for Nuclear Research, Hungarian Academy of Sciences (Atomki), 4026 Debrecen Bem tér 18/c, Hungary
2
ELI-ALPS, ELI-HU Non-profit Ltd., Dugonics tér 13, 6720 Szeged, Hungary
3
Institute of Physics, University of Miskolc, 3515 Miskolc-Egyetemváros, Hungary
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Received:
15
November
2018
Received in final form:
11
February
2019
Published online:
17
April
2019
Abstract
The state-to-state (exchange) interference of the autoionizing resonances of helium is studied in (e,2e) experiments. These studies are disturbed by the coincidence events caused by the direct ionization, so their decrease is desirable. For this reason, to mimic the experimental observation, we performed four-body classical trajectory Monte Carlo calculations. The calculations were done for 93.15 eV primary energy, where the exchange interference of the 2s2(1S) and 2p2(1D) autoionizing states of helium is expected. The yields of non-coincidence and coincidence events detected in various combinations of scattering geometry were calculated and compared with the experimental observations.
Key words: Topical issue
Contribution to the Topical Issue “Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2018)”, edited by Károly Tőkési, Béla Paripás, Gábor Pszota, and Andrey V. Solov’yov.
© The Author(s) 2019. This article is published with open access at Springerlink.com
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
