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HK: Fachverband Physik der Hadronen und Kerne

HK 66: Structure and Dynamics of Nuclei 13

HK 66.2: Vortrag

Donnerstag, 26. März 2015, 17:15–17:30, T/SR19

Study of fission barriers in neutron-rich nuclei using the (p,2p) reaction: Status of SAMURAI-Experiment NP1306 SAMURAI14 — •Sebastian Reichert for the NP1306-SAMURAI14 collaboration — TU Munich

Violent stellar processes are currently assumed to be a major origin of the elements beyond iron and their abundances. The conditions during stellar explosions lead to the so called r- process in which the rapid capture of neutrons and subsequent β decays form heavier elements. This extension of the nuclei stops at the point when the repulsive Coulomb energy induces fission. Its recycling is one key aspect to describe the macroscopic structure of the r-process and the well known elemental abundance pattern. The RIBF at RIKEN is able to provide such neutron rich heavy element beams and a first test with the primary beam 238U was performed to understand the response of the SAMURAI spectrometer and detectors for heavy beams. The final goal is the definition of the fission barrier height with a resolution of 1 MeV (in sigma) using the missing mass method using (p,2p) reactions in inverse kinematics. Supported by DFG Cluster of excellence: "Origin and structure of the Universe"