# 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
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
Language
• English
Classification
Physics