Atoms (Mar 2021)
Angular Distribution of Characteristic Radiation Following the Excitation of He-Like Uranium in Relativistic Collisions
- Alexandre Gumberidze,
- Daniel B. Thorn,
- Andrey Surzhykov,
- Christopher J. Fontes,
- Dariusz Banaś,
- Heinrich F. Beyer,
- Weidong Chen,
- Robert E. Grisenti,
- Siegbert Hagmann,
- Regina Hess,
- Pierre-Michel Hillenbrand,
- Paul Indelicato,
- Christophor Kozhuharov,
- Michael Lestinsky,
- Renate Märtin,
- Nikolaos Petridis,
- Roman V. Popov,
- Reinhold Schuch,
- Uwe Spillmann,
- Stanislav Tashenov,
- Sergiy Trotsenko,
- Andrzej Warczak,
- Günter Weber,
- Weiqiang Wen,
- Danyal F. A. Winters,
- Natalya Winters,
- Zhong Yin,
- Thomas Stöhlker
Affiliations
- Alexandre Gumberidze
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Daniel B. Thorn
- Lawrence Livermore National Laboratory, Livermore, CA 94550-9234, USA
- Andrey Surzhykov
- Physikalisch-Technische Bundesanstalt, D-38116 Braunschweig, Germany
- Christopher J. Fontes
- Los Alamos National Laboratory, Computational Physics Division, Los Alamos, NM 87545, USA
- Dariusz Banaś
- Institute of Physics, Jan Kochanowski University, PL-25-406 Kielce, Poland
- Heinrich F. Beyer
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Weidong Chen
- Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China
- Robert E. Grisenti
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Siegbert Hagmann
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Regina Hess
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Pierre-Michel Hillenbrand
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Paul Indelicato
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France, 4, Place Jussieu, F-75005 Paris, France
- Christophor Kozhuharov
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Michael Lestinsky
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Renate Märtin
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Nikolaos Petridis
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Roman V. Popov
- Department of Physics, St. Petersburg State University, 198504 St. Petersburg, Russia
- Reinhold Schuch
- Physics Department, Stockholm University, S-106 91 Stockholm, Sweden
- Uwe Spillmann
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Stanislav Tashenov
- Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120 Heidelberg, Germany
- Sergiy Trotsenko
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Andrzej Warczak
- Institute of Physics, Jagiellonian University, 30-348 Krakow, Poland
- Günter Weber
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Weiqiang Wen
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Danyal F. A. Winters
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Natalya Winters
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- Zhong Yin
- Laboratory for Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
- Thomas Stöhlker
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- DOI
- https://doi.org/10.3390/atoms9020020
- Journal volume & issue
-
Vol. 9,
no. 2
p. 20
Abstract
In this paper, we present an experimental and theoretical study of excitation processes for the heaviest stable helium-like ion, that is, He-like uranium occurring in relativistic collisions with hydrogen and argon targets. In particular, we concentrate on angular distributions of the characteristic Kα radiation following the K → L excitation of He-like uranium. We pay special attention to the magnetic sub-level population of the excited 1s2lj states, which is directly related to the angular distribution of the characteristic Kα radiation. We show that the experimental data can be well described by calculations taking into account the excitation by the target nucleus as well as by the target electrons. Moreover, we demonstrate for the first time an important influence of the electron-impact excitation process on the angular distributions of the Kα radiation produced by excitation of He-like uranium in collisions with different targets.
Keywords