Conference paper

Publication year: 1997

Pages: 149-154

Journal: Hyperfine Interactions

Volume number: 108

Issue number: 1-3

ISSN: 0304-3843

DOI Link: https://doi.org/10.1023/A:1012694209176

Conference: 2nd Euroconference on Atomic Physics with Stored Highly Charged Ions

Publisher: Springer

Abstract: 
Recombination of Au49+, Au50+, and Au51+ ions has been studied at the TSR. With Au50+ ions a storage lifetime of only 2 to 4 s was observed with the magnetically expanded electron beam of the cooler at a density of n(e) = 10(7) cm(-3). This short storage time is a consequence of the highest recombination rate coefficient ever observed with an atomic ion (1.8.10(-6) cm(3) s(-1) at zero relative energy E-rel = 0 between electrons and ions). At about 30 meV a huge dielectronic recombination resonance is found with a record small width of only about 15 meV. Such resonances fortuitously occurring near E-rel = 0 are probably the main reason for the enhanced recombination rates observed with Au50+, with Pb53+ (in a recent experiment at LEAR) as well as with other complex ions. For Au49+ and Au51+ the recombination rates are smaller by an order of magnitude.

Harvard Citation style: Uwira, O., Muller, A., Linkemann, J., Bartsch, T., Brandau, C., Schmitt, M., et al. (1997) Recombination measurements at low energies with Au-49+,Au-50+,Au-51+ at the TSR, Hyperfine Interactions, 108(1-3), pp. 149-154. https://doi.org/10.1023/A:1012694209176

APA Citation style: Uwira, O., Muller, A., Linkemann, J., Bartsch, T., Brandau, C., Schmitt, M., Wolf, A., Schwalm, D., Schuch, R., Zong, W., Lebius, H., Graham, W., Doerfert, J., & Savin, D. (1997). Recombination measurements at low energies with Au-49+,Au-50+,Au-51+ at the TSR. Hyperfine Interactions. 108(1-3), 149-154. https://doi.org/10.1023/A:1012694209176