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HK: Fachverband Physik der Hadronen und Kerne

HK 25: Kernphysik / Spektroskopie

HK 25.1: Vortrag

Mittwoch, 14. März 2007, 11:15–11:30, D

Quadrupole moment of the 8⁺ yrast state in ⁸⁴Kr^* — •Ronald Schwengner¹, Dimiter Balabanski², Gerda Neyens², Nadia Benouaret², Dana Borremans², Nico Coulier², Marieke De Rydt², Georgi Georgiev², Stephen Mallion^1,2, Georgi Rainovski^1,3, Gencho Rusev¹, Stefanie Teughels², and Katrien Vyvey² — ¹Forschungszentrum Dresden-Rossendorf, 01314 Dresden, Germany — ²Katholieke Universiteit Leuven, 3001 Leuven, Belgium — ³University of Sofia, 1164 Sofia, Bulgaria

The quadrupole moment of the 8⁺ yrast state in ⁸⁴Kr was measured using the level-mixing spectroscopy technique to be Q = 36(4) efm². The result is compared with predictions of the shell model using common sets of effective charges. The comparison of experimental quadrupole moments with calculated values for 8⁺ states in Kr, Sr and Zr isotopes with N = 48, 50 and for 9/2⁺ states in isotopes with N = 47, 49 suggests a modification of the effective charges used in this region. The results have been published in Ref. [1].
[1] R. Schwengner et al., Phys. Rev. C 74, 034309 (2006).
^* Supported by the European Commission, FP5 programme, under contract HPRICT199900110.