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Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 55: Structure and Dynamics of Nuclei 11

HK 55.2: Talk

Thursday, March 26, 2015, 15:00–15:15, T/SR19

Reactions of neutron-rich Sn isotopes investigated at relativistic energies at R3B — •Fabia Schindler1, Thomas Aumann1, Konstanze Boretzky2, Jacob Johansen1, and Philipp Schrock1 for the R3B collaboration — 1IKP, TU Darmstadt — 2GSI Helmholtzzentrum

Reactions of neutron-rich tin isotopes in a mass range of A=124 to A=134 have been measured at the R3B setup at GSI in inverse kinematics. Due to the neutron excess, which results in a weaker binding of the valence neutrons such isotopes are expected to form a neutron skin. The investigation of this phenomenon is an important goal in nuclear-structure physics.

Reactions of the tin isotopes with different targets have been performed kinematically complete. The taken data set therefore allows for the extraction of the neutron-skin thickness from two independent reaction channels. These are dipole excitations on the one hand and nuclear-induced reactions on the other hand. This contribution focuses on the latter mechanism. The analysis techniques which are used to extract the total charge-changing as well as the total neutron-removal cross section are presented using the example of 124Sn. The total neutron-removal cross section is of particular interest because of its high sensitivity to the neutron-skin thickness.

This work is supported by HIC for FAIR, GSI-TU Darmstadt cooperation, NAVI and the BMBF project 05P12RDFN8.

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