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HK: Fachverband Physik der Hadronen und Kerne

HK 40: Structure and Dynamics of Nuclei VIII

HK 40.4: Vortrag

Mittwoch, 28. Februar 2018, 17:30–17:45, HZO 70

Looking below the threshold: low energy spectrum for neutron-rich Tin isotopes — •Lorenzo Zanetti¹, Thomas Aumann^1,2, Philipp Schrock³, Kostanze Boretzky², Igor Gasparic⁴, Dominic Rossi¹, Dmytro Symochko¹, Andrea Horvat¹, and Fabia Schindler¹ for the R3B collaboration — ¹TU Darmstadt — ²GSI Helmholtzzentrum — ³CNS, The University of Tokyo — ⁴Ruder Boskovic Institute, Zagreb, Croatia

Research on the nuclear equation of state (EOS) is very active: many theoretical frameworks provide a way to put constraint on the EOS’s isovector properties, using observables relating to the electric dipole response of neutron-rich nuclei. One of such observables is the dipole polarizability constant, α_D.

The S412 experiment at the GSI was a Coulomb excitation experiment investigating the E1 response of neutron-rich isotopes of Tin with the R3B/LAND setup. The data collected during the campaign, especially for ¹³²Sn, can be used to estimate α_D, provided a full energy spectrum for the gamma deexictation is available. We are currently analysing the lower energy (below the neutron separation threshold) part of the gamma spectrum in order to complete the picture.

This work is supported by HIC for FAIR, GSI-TU Darmstadt cooperation, NAVI, CSF project SR-ETNo and the BMBF project 05P15RDFN1.