Konferenzpaper

Jahr der Veröffentlichung: 2003

Seiten: 66-69

Zeitschrift: Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

Bandnummer: 205

ISSN: 0168-583X

eISSN: 1872-9584

DOI Link: https://doi.org/10.1016/S0168-583X(03)00535-4

Konferenz: 11th International Conference on the Physics of Highly Charged Ions (HCI 2002)

Verlag: Elsevier

Abstract: 
Autoionizing high-Rydberg states formed during the initial electron capture phase of dielectronic recombination (DR) provide a unique access to spectroscopic information of highly charged heavy ions. This paper summarizes recent experimental and theoretical studies on the low energy 1s(2)2p(j)nl(j), (j = 1/2, 3/2) Be-like DR resonances associated with the 2s(1/2) --> 2p(j) core excitations of the Li-like ions Au-197(79)76+, Pb-208(92)79+ and U-238(92)89+ An extrapolation of the resonance energies of the 1s(2)2p(1/2)nl(j), (n greater than or equal to 20) Rydberg series to the series limits (n --> infinity) yields the 2s(1/2)-2p(1/2) transition energies. The experimental precision of below 100 meV for all three ions obtained with this photonfree spectroscopic method is comparable to the best optical measurements available and allows to test quantum electrodynamics of strong central fields on a level of below 7% of the alpha(2) contributions. Furthermore, our theoretical calculations show that the observed DR resonance positions sensitively depend on the charge distribution within the atomic nucleus. (C) 2003 Elsevier Science B.V. All rights reserved.

Harvard-Zitierstil: Brandau, C., Bartsch, T., Böhm, S., Böhme, C., Hoffknecht, A., Knopp, H., et al. (2003) Autoionizing high-Rydberg states of very heavy Be-like ions: A tool for precision spectroscopy, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 205, pp. 66-69. https://doi.org/10.1016/S0168-583X(03)00535-4

APA-Zitierstil: Brandau, C., Bartsch, T., Böhm, S., Böhme, C., Hoffknecht, A., Knopp, H., Schippers, S., Shi, W., Müller, A., Grün, N., Scheid, W., Steih, T., Bosch, F., Franzke, B., Kozhuharov, C., Mokler, P., Nolden, F., Steck, M., Stöhlker, T., ...Stachura, Z. (2003). Autoionizing high-Rydberg states of very heavy Be-like ions: A tool for precision spectroscopy. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 205, 66-69. https://doi.org/10.1016/S0168-583X(03)00535-4