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Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 48: Structure and Dynamics of Nuclei VII

HK 48.1: Talk

Thursday, March 30, 2017, 16:45–17:00, F 2

Lifetime Measurements in 61Zn — •M. Queiser, A. Vogt, P. Reiter, R. Altenkirch, K. Arnswald, T. Braunroth, A. Dewald, C. Fransen, B. Fu, R. Hetzenegger, R. Hirsch, V. Karayonchev, L. Kaya, L. Lewandowski, C. Müller-Gatermann, J.-M. Regis, D. Rosiak, D. Schneiders, M. Seidlitz, B. Siebeck, T. Steinbach, and K. Wolf — Institut für Kernphysik, Universität zu Köln

Lifetimes of excited states in the neutron-deficient nucleus 61Zn were measured employing the Recoil-Distance Doppler-Shift (RDDS) and the Fast-Timing Method at the University of Cologne. The nucleus of interest was populated as an evaporation residue in 40Ca(24Mg,n2p)61Zn and 58Ni(α,n)61Zn reactions at 67 MeV and 19 MeV, respectively. Five lifetimes are measured for the first time, including the 5/2 → 3/2 transition depopulating the 124-keV isomer. Short lifetimes from the RDDS analysis are corrected for Doppler-Shift Attentuation (DSA) effects in the stopper foil. Ambiguous results from previous measurements were resolved. The obtained lifetimes are compared to predictions from different sets of shell-model calculations. Supported by the Bonn-Cologne Graduate School of Physics and Astronomy.

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