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HK: Fachverband Physik der Hadronen und Kerne

HK 10: Struktur und Dynamik von Kernen

HK 10.4: Vortrag

Montag, 17. März 2014, 17:45–18:00, HZ 4

Reactions of neutron-rich Sn isotopes investigated at relativistic energies at R³B — •Fabia Schindler for the R3B collaboration — TU-Darmstadt, IKP

Reactions of neutron-rich Sn isotopes have been measured in inverse kinematics at the R³B setup at GSI in Darmstadt in 2012. Due to the neutron excess, which results also in a weaker binding of the valence neutrons, such isotopes are expected to form a very neutron-rich surface, which is called the neutron skin. The investigation of this phenomenon is one of the main goals of the experiment. The reaction products of the isotopes ¹²⁴Sn to ¹³⁴Sn have been measured at beam energies of 300 AMeV to 600 AMeV in a kinematically complete way. Different reaction channels will be analyzed, therefore information about the neutron skin can be obtained from different methods. These are in particular the neutron removal cross sections and the dipole polarizability of the nucleus, which are both sensitive to the neutron-skin thickness. The latter will be obtained from the differential cross section of electromagnetic excitation measured in a wide excitation-energy range including the Pygmy and Giant Dipole Resonances.

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