TY  - JOUR
A1  - Gumberidze, Alexandre
A1  - Thorn, Daniel B.
A1  - Surzhykov, Andrey
A1  - Fontes, Christopher J.
A1  - Banaś, Dariusz
A1  - Beyer, Heinrich F.
A1  - Chen, Weidong
A1  - Grisenti, Robert Evaristo
A1  - Hagmann, Siegbert
A1  - Hess, Regina
A1  - Hillenbrand, Pierre-Michel
A1  - Indelicato, Paul
A1  - Kozhuharov, Christophor
A1  - Lestinsky, Michael
A1  - Märtin, Renate
A1  - Petridis, Nikolaos
A1  - Popov, Roman V.
A1  - Schuch, Reinhold
A1  - Spillmann, Uwe
A1  - Tashenov, Stanislav
A1  - Trotsenko, Sergiy
A1  - Warczak, Andrzej
A1  - Weber, Günter
A1  - Wen, Weiqiang
A1  - Winters, Danyal Ferdinant Alexander
A1  - Winters, Natalya
A1  - Yin, Zhong
A1  - Stöhlker, Thomas
T1  - Angular distribution of characteristic radiation following the excitation of He-like uranium in relativistic collisions
T2  - Atoms
N2  - 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.
KW  - highly-charged ions
KW  - X-rays
KW  - storage rings
KW  - relativistic collisions
KW  - excitation
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62140
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-621401
SN  - 2218-2004
N1  - This work was supported by the Helmholtz Alliance Program of the Helmholtz Association, contract HA216/EMMI “Extremes of Density and Temperature: Cosmic Matter in the Laboratory”. The work of C.J. Fontes was supported by the U.S. Department of Energy through the Los Alamos National Laboratory, which is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001). S.T. was supported by Deutsche Forschungsgemeinschaft (DFG), contract TA 740 1-1. This work was supported by SPbSU-DFG (Grants No. 11.65.41.2017 and No. STO 346/5-1). R.V.P. acknowledges also the financial support from the Foundation for the advancement of theoretical physics and mathematics “BASIS”.
VL  - 9
IS  - 2, art. 20
SP  - 1
EP  - 11
PB  - MDPI
CY  - Basel
ER  -