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Darmstadt 2016 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Structure and Dynamics of Nuclei X

HK 51.6: Talk

Thursday, March 17, 2016, 15:15–15:30, S1/01 A03

First measurement of the decoupling parameter for the K=1 band of 156Gd — •Tobias Beck1, Jacob Beller1, Vera Derya2, Udo Gayer1, Johann Isaak3,4, Bastian Löher3,4, Norbert Pietralla1, Philipp Ries1, Christopher Ries1, Marcus Scheck1,5,6, Werner Tornow7, Henry R. Weller7, Volker Werner1, and Markus Zweidinger Markus11IKP, TU Darmstadt — 2IKP, Universität zu Köln — 3EMMI, GSI, Darmstadt — 4FIAS, Frankfurt — 5School of Engineering, UWS Paisley, UK — 6SUPA, Glasgow, UK — 7Duke University, Durham, USA

In a deformed nucleus the nuclear states are combinations of an intrinsic motion and a rotational motion of the core. In this scenario the Coriolis force changes the projection of the angular momentum on the symmetry axis and admixes different K values. The effects of the Coriolis interactions have been observed experimentally for K=1/2 bands. The recent observation of the first excited rotational state of the isovector low-lying JKπ=11+ scissors mode in a (γ,γ′) experiment inaugurates a case to study the Coriolis decoupling for K=1 bands. In the talk, the theoretical description provided by Bohr and Mottelson will be presented and their adaption to the particular case will be explained alongside the ongoing analysis and open questions.
⋆ Supported by the DFG within the scope of SFB 634

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