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München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 42: Structure and Dynamics of Nuclei VIII

HK 42.1: Group Report

Wednesday, March 20, 2019, 16:30–17:00, HS 14

Systematics of the Electric Dipole Response in Stable Tin Isotopes* — •Sergej Bassauer1, Peter von Neumann-Cosel1, and Atsushi Tamii2 for the E422 collaboration — 1Institut für Kernphysik, TU Darmstadt, Darmstadt, Germany — 2RCNP, Osaka, Japan

The electric dipole is an important property of heavy nuclei. Precise knowledge of the electric dipole response provides information on the electric dipole polarisability which in turn allows to extract important constraints on neutron-skin thickness in heavy nuclei and parameters of the symmetry energy. The tin isotope chain is particularly suited for a systematic study of the dependence of the electric dipole response on neutron excess as it provides a wide mass range of accessible isotopes with little change of the underlying structure. Recently an inelastic proton scattering experiment under forward angles including 0 on even-even 112−124Sn isotopes was performed at the Research Centre for Nuclear Physics (RCNP), Japan with a focus on the low energy strength and polarisability. In this talk first results will be discussed.

*Supported by the DFG through SFB 1245.

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