Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 61: Structure and Dynamics of Nuclei X

HK 61.9: Talk

Friday, March 31, 2017, 16:00–16:15, F 33

Structure Studies from 16O(p, 2p)15N Reactions with the Missing Mass Spectroscopy — •Sebastian Reichert for the TUM-RIKEN-p2p collaboration — TU München, James Franck Str., 85748 Garching

The manifestation of the role of fission in the element synthesis appears to be of great importance in the r-process which is responsible for a big fraction of the elements heavier than iron in the Universe: Its termination point is marked by the onset of fission. The abundances of the elements are determined also by a detailed understanding of the elemental pattern of fission. A key technology is the missing mass spectroscopy of quasi-free scattering (p,2p) reactions in inverse kinematics.

Therefore a new detector setup was developed and tested at the HIMAC Accelerator Facility in Japan. Results of the reconstructed excitation energy spectrum of 15N are presented.

Providing nuclei as RI beam, this setup will give us the unique opportunity to assign the fission barrier heights for many short lived nuclei for the first time. Plus, the fission fragments can be measured in flight, thereby enabling us to determine its mass and charge distribution accurately utilizing the features of the probe in conjunction with the unique and powerful capability of RIBF.

Supported by BMBF 05P15WOFNA (Germany) and Outstanding Individual Research Grant (Japan).