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Münster 2002 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 45: Nuclear Physics / Spectroscopy VII

HK 45.5: Vortrag

Donnerstag, 14. März 2002, 17:30–17:45, B

Structure of excited Kπ=0+ bands in 168Er. — •A. Linnemann1, J. Jolie1, H.G. Börner2, M. Jentschel2, and P. Mutti21Institut für Kernphysik, Universität zu Köln — 2Institut Laue-Langevin,38042 Grenoble, France

In order to investigate the character of excited Kπ=0+ bands, that can be interpreted as β- or γγ-bands, the knowledge of absolute decay rates is mandatory. We have studied the second excited Kπ=0+ band in 168Er using neutron capture on 167Er and the γ-ray-induced Doppler-boardening technique (GRID) to measure the lifetimes. The experiment was performed at the double-flat-crystal spectrometer GAMS4 installed at the Laue-Langevin (ILL) in Grenoble. The lifetimes of the 24+ state at 1493 keV and the 44+ state at 1656 keV could be measured for the first time. The collectivity of this band can be studied using the absolute transition rates.

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