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HK: Fachverband Physik der Hadronen und Kerne

HK 18: Kernphysik / Spektroskopie

HK 18.6: Talk

Tuesday, March 13, 2007, 18:15–18:30, D

Nuclear moments and isotope shifts of neutron-rich ^64,66−70Cu studied with collinear laserspectroscopy — K. Flanagan¹, •M. Kowalska², K. Blaum^2,3, B. Cheal⁴, D. Forest⁴, Ch. Geppert^3,5, P. Lievens⁶, R. Neugart², G. Neyens¹, W. Noertershaeuser^3,5, and D. Yordanov¹ — ¹Instituut voor Kern- en Stralingsfysica, K.U. Leuven, Belgium — ²Institut für Physik, Universität Mainz, Germany — ³GSI, Darmstadt, Germany — ⁴Schuster Laboratory, University of Manchester, UK — ⁵Institut für Kernchemie, Universität Mainz, Germany — ⁶Laboratorium voor Vaste-Stoffysica en Magnetisme, K.U. Leuven, Belgium

Among other observables, ground state properties of nuclei, such as spins/parities, nuclear moments and charge radii, contribute widely to our understanding of the nuclear structure, particularly in the context of shell closures and magic numbers, also far from stability.

In 2006 we started an experimental programme on neutron-rich Cu isotopes, where single-particle level migration and magicity of N=50 are of high interest. In the first part, we investigated isotopes closer to stability, i.e. ^{64,66,67,68g,68m,69,70g}Cu, whose hyperfine structure was recorded with our collinear laser spectroscopy setup located at ISOLDE/CERN. Based on this we could confirm, and in some cases improve, the values and signs of their magnetic moments, as well as determine for the first time their quadrupole moments and changes in their mean square charge radii. In the talk we will present the physics motivation, the experimental technique, the results and their interpretation.