Andersson, J., Zagorodskikh, S., Roos, A.H. et al. Parametrization of energy sharing distributions in direct double photoionization of He. Sci Rep 9, 17883 (2019). https://doi.org/10.1038/s41598-019-53545-z
Parametrization of energy sharing distributions in direct double photoionization of He
|Author:||Andersson, J.1; Zagorodskikh, S.1,2; Roos, A. Hult1;|
1Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
2Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
3Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FI-90014 University of Oulu, Oulu, Finland
4Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France
5Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, 7610001, Israel
6Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
7Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187, Dresden, Germany
|Online Access:||PDF Full Text (PDF, 1.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe202002286838
|Publish Date:|| 2020-02-28
We present experimental results on the characteristic sharing of available excess energy, ranging from 11–221 eV, between two electrons in single-photon direct double ionization of He. An effective parametrization of the sharing distributions is presented along with an empirical model that describes the complete shape of the distribution based on a single experimentally determinable parameter. The measured total energy sharing distributions are separated into two distributions representing the shake-off and knock-out parts by simulating the sharing distribution curves expected from a pure wave collapse after a sudden removal of the primary electron. In this way, empirical knock-out distributions are extracted and both the shake-off and knock-out distributions are parametrized. These results suggest a simple method that can be applied to other atomic and molecular systems to experimentally study important aspects of the direct double ionization process.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
114 Physical sciences
This work has been financially supported by the Swedish Research Council (VR) and the Knut and Alice Wallenberg Foundation, Sweden.
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