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Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 22: Structure and Dynamics of Nuclei III

HK 22.7: Vortrag

Dienstag, 28. März 2017, 15:45–16:00, F 2

Isomer γ-ray decay spectroscopy of 92,94Se — •Cesar Lizarazo1,4, Volker Werner1, Norbert Pietralla1, P.-A. Söderström2, Pieter Doornenbal2, Alexandre Obertelli3, Cristina Nita5, and EURICA Collaboration2 for the SEASTAR collaboration — 1TU Darmstadt, Darmstadt, Germany — 2RIKEN Nishina Center, Wako-Shi, Japan — 3CEA, Saclay, Saclay, France — 4GSI, Darmstadt, Germany — 5IFIN-HH, Bucharest, Romania

Isomer γ-ray decay of neutron rich 92−94Se was experimentally studied using the EURICA detector array. The exotic nuclei were produced via the in-flight fission technique at the RIBF-RIKEN facility. They were identified via Z and A/Q determination using the ZeroDegree spectrometer and implanted in the AIDA silicon stopper placed at the center of the EURICA HPGe detector array. New transitions on all the nuclei studied were detected, allowing to extend the corresponding level schemes. The isomeric state of 94Se has been observed for the first time. The origin of the observed isomeric states is discussed and the experimental results are compared to up-to-date calculations. Supported by NuSTAR DA unter grant No. 05P12RDFN8.

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