Journal article

Publication year: 2015

Journal: Journal of Physics B: Atomic, Molecular and Optical Physics

Volume number: 48

Issue number: 14

ISSN: 0953-4075

eISSN: 1361-6455

DOI Link: https://doi.org/10.1088/0953-4075/48/14/144008

Publisher: IOP Publishing

Abstract: 
Be-like Xe-136(50+) ions have been investigated employing the resonant electron-ion collision process of dielectronic recombination (DR) as a spectroscopic tool. The experiments were performed at the experimental storage ring in Darmstadt, Germany, using its electron cooler as a target for free electrons. DR Rydberg resonance series 2s(2) + e(-) -> 2s2p (j')nl (j) for the associated intra-L-shell transitions 2s(2) S-1(0) - 2s2p(1/2) P-3(1), 2s(2) S-1(0) - 2s2p(3/2) P-3(2) and 2s(2) S-1(0) - 2s2p(3/2) P-1(1) were observed with high resolution. In addition to these excitations from the ground state we determined resonances associated with excitations 2s2p(1/2) P-3(0) -> 2p(1/2)2P(3/2) of ions initially in the metastable 2s2p(1/2) P-3(0) state. The corresponding excitation energies were determined to be E (S-1(0) -> P-3(1)) = 127.269(46) eV, 0 3 1 E (S-1(0) -> P)= 469.474(81) eV 0 3 2 and E (S-1(0) -> P-1(1))= 532.801(16) eV, and E (P-3(0) -> 2p(1/2)2p(3/2) P-3(1))= 533.733(22) eV. These excitation energies are compared with previous measurements and with recent state-of-the-art atomic structure calculations.

Harvard Citation style: Bernhardt, D., Brandau, C., Harman, Z., Kozhuharov, C., Bohm, S., Bosch, F., et al. (2015) Spectroscopy of berylliumlike xenon ions using dielectronic recombination, Journal of Physics B: Atomic, Molecular and Optical Physics, 48(14), Article 144008. https://doi.org/10.1088/0953-4075/48/14/144008

APA Citation style: Bernhardt, D., Brandau, C., Harman, Z., Kozhuharov, C., Bohm, S., Bosch, F., Fritzsche, S., Kieslich, J., Knopp, H., Nolden, F., Shi, W., Stachura, Z., Steck, M., Sthoelker, T., Schippers, S., & Müller, A. (2015). Spectroscopy of berylliumlike xenon ions using dielectronic recombination. Journal of Physics B: Atomic, Molecular and Optical Physics. 48(14), Article 144008. https://doi.org/10.1088/0953-4075/48/14/144008