Darmstadt 2008 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 29: Electron scattering and recombination
A 29.5: Vortrag
Freitag, 14. März 2008, 12:15–12:30, 3D
Nuclear properties and strong-field electron dynamics explored by dielectronic recombination — •Z. Harman1, U.D. Jentschura1, C.H. Keitel1, W. Scheid2, C. Brandau3, C. Kozhuharov3, T. Stöhlker3, D. Bernhard2, S. Schippers2, A. Müller2, V. Mäckel1, H. Tawara1, J.R. Crespo López-Urrutia1, and J. Ullrich1 — 1Max-Planck-Institut für Kernphysik — 2Justus-Liebig-Universität Giessen — 3GSI Darmstadt
Dynamical and structural properties of heavy highly charged ions have been investigated by means of dielectronic recombination. Isotope shift measurements of low-lying resonances, combined with our atomic structure calculations, allow one to extract information on the nuclear charge distribution of the isotopes involved. We analyze the dependence of electron interaction and QED contributions on the nuclear size and calculate mass shift terms to determine the change of nuclear radii corresponding to the isotope shift in Li-like Nd measured with the ESR storage ring of the GSI Darmstadt [1,2]. This approach constitutes a new technique to determine nuclear radii. Furthermore, we study relativistic electron interaction and QED effects in the strong binding fields of heavy nuclei in collaboration with experiments with the HD-EBIT [3] and the ESR [2]. Our investigation confirm the role of relativistic corrections to the electron interaction in a dynamical process. [1] C. Brandau, C. Kozhuharov, Z. Harman, et al., submitted (2007) [2] C. Brandau, C. Kozhuharov, A. Müller, et al., J. Phys.: Conf. Ser. 58, 81-86 (2007) [3] V. Mäckel, A.N. Artemyev, J.R. López Crespo-Urrutia, et al., We102, XXV ICPEAC, Book of Abstracts (2007)