Journal article

Publication year: 2015

Journal: Physical review A

Volume number: 91

Issue number: 1

ISSN: 1050-2947

eISSN: 1094-1622

DOI Link: https://doi.org/10.1103/PhysRevA.91.012710

Publisher: American Physical Society

Abstract: 
The resonant process of dielectronic recombination (DR) has been applied as a spectroscopic tool to investigate intra-L-shell excitations 2s-2p(j) in Li-like Xe-136(51+). The experiments were carried out at the electron cooler of the Experimental Storage Ring of the GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt, Germany. The observed center-of-mass energy range (0-505 eV) covers all resonances associated with the 2s + e -> (2p(1/2)nl(j))(J) and (2p(3/2)nl(j))(J) DR processes. Energies and strengths of isolated 2p(1/2)n and 2p(3/2)n DR-resonance groups were obtained for principal quantum numbers n up to 43 and 36, respectively. The 2s-2p(1/2) and 2s-2p(3/2) excitation energies were deduced to be 119.816(42) eV and 492.174(52) eV. The excitation energies are compared with previous measurements of other groups and with recent QED calculations. In addition, the experimental spectra and extracted resonance strengths are compared with multiconfiguration Dirac-Fock calculations. Measurements and theory are found to be in good agreement with each other.

Harvard Citation style: Bernhardt, D., Brandau, C., Harman, Z., Kozhuharov, C., Boehm, S., Bosch, F., et al. (2015) Electron-ion collision spectroscopy: Lithium-like xenon ions, Physical review A, 91(1), Article 012710. https://doi.org/10.1103/PhysRevA.91.012710

APA Citation style: Bernhardt, D., Brandau, C., Harman, Z., Kozhuharov, C., Boehm, S., Bosch, F., Fritzsche, S., Jacobi, J., Kieslich, S., Knopp, H., Nolden, F., Shi, W., Stachura, Z., Steck, M., Stoehlker, T., Schippers, S., & Müller, A. (2015). Electron-ion collision spectroscopy: Lithium-like xenon ions. Physical review A. 91(1), Article 012710. https://doi.org/10.1103/PhysRevA.91.012710