Conference paper

Publication year: 2007

Journal: Journal of Physics: Conference Series

Volume number: 58

DOI Link: https://doi.org/10.1088/1742-6596/58/1/012

Conference: 13th International Conference on the Physics of Highly Charged Ions (HCI)

Publisher: IOP Publishing: Conference Series

Abstract: 

In this contribution, we report on photorecombination measurements of highly charged ions (HCI) that were performed using the electron cooler of the heavy-ion storage ring ESR of the Gesellschaft für Schwerionenforschung (GSI) as a target of free electrons. The experimental technique of resonance reaction spectroscopy by means of dielectronic recombination (DR) was employed in two new ways:

The determination of isotope shifts in the DR resonance spectrum of few-electron heavy ions is a novel method with unique properties for investigations at the interface between electrons and the atomic nucleus, e.g., charge radii and hyperfine effects. First results from a pilot experiment with the two isotopes A = 142 and A = 150 of Li-like neodymium ^ANd⁵⁷⁺ are discussed.

Until very recently, electron-ion collision experiments at high relative energies of more than a few keV were not accessible at the electron coolers of storage rings. Such high energies are needed to access DR processes that involve the K-shell electrons of very heavy ions. The novel approach of DR measurements with a stochastically (pre-)cooled ion beam resolves this problem. Results for the photorecombination of hydrogen-like U⁹¹⁺ in the energy range (63 keV - 74 keV) of the KLL-DR process are presented.

Harvard Citation style: Brandau, C., Kozhuharov, C., Müller, A., Beckert, K., Beller, P., Bernhardt, D., et al. (2007) Photorecombination studies of highly charged ions at the storage ring ESR: a progress report, Journal of Physics: Conference Series, 58, Article 81. https://doi.org/10.1088/1742-6596/58/1/012

APA Citation style: Brandau, C., Kozhuharov, C., Müller, A., Beckert, K., Beller, P., Bernhardt, D., Bosch, F., Böhm, S., Currell, F., Gumberidze, A., Harman, Z., Jacobi, J., Mokler, P., Nolden, F., Reuschl, R., Schippers, S., Schmidt, E., Spillmann, U., Stachura, Z., ...Wolf, A. (2007). Photorecombination studies of highly charged ions at the storage ring ESR: a progress report. Journal of Physics: Conference Series. 58, Article 81. https://doi.org/10.1088/1742-6596/58/1/012