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München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Structure and Dynamics of Nuclei V

HK 27.7: Talk

Tuesday, March 19, 2019, 18:15–18:30, HS 14

Population in fragmentation reaction and properties of γ-decaying isomers in the 100Sn region — •Guillaume Haefner1,2, Andrey Blazhev1, Kevin Moschner1, Jan Jolie1, Plamen Boutachkov3, Paul John Davies4, and Robert Wadsworth41IKP, Universität zu Köln, Deutschland — 2CSNSM Orsay, Frankreich — 3GSI Darmstadt, Deutschland — 4University of York, Großbritannien

The study of nuclei around 100Sn has been of long standing interest for the nuclear structure and nuclear astrophysics (see Ref. [1] for a recent review). Lately, results on properties of γ-decaying isomers in that region studied in a fragmentation reaction of a 124Xe beam at 345 MeV/A at the RIBF of the RIKEN Nishina Center have been reported by Park et al [2]. This contribution presents results obtained in a similar experiment at the RIBF. Half-lives of isomeric states have been remeasured and are consistent with literature values while improving the uncertainty in some cases. Reduced transition probabilities are deduced and compared to shell-model calculations in various model spaces. The previously reported low-energy transitions in 92Rh and 96Ag were remeasured and their energies are given with better precision. Additionally, isomeric ratios have been remeasured and are compared to the previous study and the sharp cut-off model of fragmentation reaction.

[1] T. Faestermann, M. Górska and H. Grawe, Prog. Part. Nucl. Phys. 69, 85 (2013)

[2] J. Park et al., Phys. Rev. C 96, 044311 (2017)

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