Subshell-selective x-ray studies of radiative recombination of ${\mathrm{U}}^{92+}$ ions with electrons for very low relative energies

Banaś, D.; Pajek, M.; Surzhykov, A.; Stöhlker, Th.; Brandau, C.; Gumberidze, A.; Kozhuharov, C.; Beyer, H. F.; Böhm, S.; Bosch, F.; Czarnota, M.; Chatterjee, S.; Dousse, Jean-Claude; Fritzsche, S.; Hagmann, S.; Liesen, D.; Mokler, P. H.; Müller, A.; Kumar, A.; Reuschl, R.; Sierpowski, D.; Spillmann, U.; Szlachetko, Jakub; Tashenov, S.; Trotsenko, S.; Verma, P.; Warczak, A.

doi:10.1103/PhysRevA.92.032710

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Journal article

Subshell-selective x-ray studies of radiative recombination of ${\mathrm{U}}^{92+}$ ions with electrons for very low relative energies

Banaś, D. Institute of Physics, Jan Kochanowski University, PL-25-406 Kielce, Poland
Pajek, M. Institute of Physics, Jan Kochanowski University, PL-25-406 Kielce, Poland
Surzhykov, A. Helmholtz-Institut Jena, D-07743 Jena, Germany
Stöhlker, Th. Helmholtz-Institut Jena, D-07743 Jena, Germany - GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany - Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany
Brandau, C. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany - Institut für Atom und Molekülphysik, Justus-Liebig-Universität, D-35392 Giessen, Germany
Gumberidze, A. ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Kozhuharov, C. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Beyer, H. F. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Böhm, S. Institut für Atom und Molekülphysik, Justus-Liebig-Universität, D-35392 Giessen, Germany
Bosch, F. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Czarnota, M. Institute of Physics, Jan Kochanowski University, PL-25-406 Kielce, Poland
Chatterjee, S. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Dousse, Jean-Claude Department of Physics, University of Fribourg, CH-1700 Fribourg, Switzerland
Fritzsche, S. Helmholtz-Institut Jena, D-07743 Jena, Germany - Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany
Hagmann, S. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Liesen, D. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Mokler, P. H. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Müller, A. Institut für Atom und Molekülphysik, Justus-Liebig-Universität, D-35392 Giessen, Germany
Kumar, A. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Reuschl, R. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Sierpowski, D. Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland
Spillmann, U. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Szlachetko, Jakub Institute of Physics, Jan Kochanowski University, PL-25-406 Kielce, Poland - Department of Physics, University of Fribourg, CH-1700 Fribourg, Switzerland
Tashenov, S. Helmholtz-Institut Jena, D-07743 Jena, Germany - Physikalisches Institut der Universität Heidelberg, D-69120 Heidelberg, Germany
Trotsenko, S. Helmholtz-Institut Jena, D-07743 Jena, Germany - GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Verma, P. GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
Warczak, A. Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland

21.09.2015

Published in:

Physical Review A. - 2015, vol. 92, no. 3, p. 032710

English Radiative recombination (RR) into the K shell and L subshells of U92+ ions interacting with cooling electrons has been studied in an x-ray RR experiment at the electron cooler of the Experimental Storage Ring at GSI. The measured radiative recombination rate coefficients for electron-ion relative energies in the range 0–1000 meV demonstrate the importance of relativistic effects. The observed asymmetry of the measured K-RR x-ray emission with respect to the cooling energy, i.e., zero average relative velocity (⟨vrel⟩=0), are explained by fully relativistic RR calculations. With our new approach, we show that the study of the angular distribution of RR photons for different relative energies opens new perspectives for detailed understanding of the RR of ions with cooling electrons in cold magnetized plasma.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

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