1. Electron-ion collision spectroscopy: Lithium-like xenon ions.
- Author
-
Bernhardt, D., Brandau, C., Harman, Z., Kozhuharov, C., Böhm, S., Bosch, F., Fritzsche, S., Jacobi, J., Kieslich, S., Knopp, H., Nolden, F., Shi, W., Stachura, Z., Steck, M., Stöhlker, Th., Schippers, S., and Müller, A.
- Subjects
- *
ELECTRON-ion collisions , *COLLISION spectroscopy , *XENON , *LITHIUM ions , *QUANTUM numbers , *HEAVY ions - Abstract
The resonant process of dielectronic recombination (DR) has been applied as a spectroscopic tool to investigate intra-L-shell excitations 2s-2pj in Li-like 136Xe51+. The experiments were carried out at the electron cooler of the Experimental Storage Ring of the GSI-Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. The observed center-of-mass energy range (0-505 eV) covers all resonances associated with the 2s+e-;(2p1/2nlj)J and (2p3/2nlj)J DR processes. Energies and strengths of isolated 2p1/2n and 2p3/2n DR-resonance groups were obtained for principal quantum numbers n up to 43 and 36, respectively. The 2s-2p1/2 and 2s-2p3/2 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. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF