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HK: Fachverband Physik der Hadronen und Kerne
HK 26: Structure and Dynamics of Nuclei V
HK 26.5: Vortrag
Mittwoch, 1. April 2020, 15:15–15:30, J-HS E
Structure of the first 2− state in 88Br — •Felix Dunkel1, Jean-Marc Régis1, Ulli Köster2, Yung Hee Kim2, Waldemar Urban3, Jan Jolie1, Arwin Esmaylzadeh1, Lisa Marie Gerhard1, Lukas Knafla1, Mario Ley1, and Kerstin Schomacker1 — 1Institut für Kernphysik der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany — 2Institut Laue-Langevin, 71 Avenue des Martyrs, 38042 Grenoble, France — 3Faculty of Physics, University of Warsaw, ul.Pasteura 5, PL-02-093 Warsaw, Poland
The structure of the first 2− state in 88Br was studied at the Institut Laue-Langevin by measuring the lifetime of this level with the gamma-gamma fast-timing technique using a setup with four LaBr3(Ce) detectors. For this purpose an isomeric 88mBr beam was produced by thermal-neutron induced fission of 235U and mass separated using LOHENGRIN. A highly accurate lifetime result together with deduced transition strengths will be presented and discussed in the context of the shell model and possible collective effects in 88Br.