Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 48: Poster – Nukleare Astrophysik
HK 48.9: Poster
Donnerstag, 22. März 2012, 14:00–16:00, P Foyer
Proton-induced experiments in storage rings — •Bo Mei1,2, Ganna Rastrepina1,2, Rene Reifarth1,2, and Michael Heil2 — 1Goethe Universität Frankfurt a. M. — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH
It is crucial to determine the cross sections of (p, γ) reactions experimentally in Gamow window of p process in order to understand the nucleosynthesis of 35 stable proton-rich nuclides between 74Se and 196Hg, which can neither be produced by s process nor by r process [1]. Storage rings, such as ESR at GSI [2] and CSRe at IMP [3], as a kind of precise spectrometer, can be used to measure cross sections of (p, γ) reactions in Gamow window in inverse kinematics. The advantages of this method are the universality for both stable and unstable nuclides, the low background, and the high efficiency. Recently, a proof-of-principle experiment has been performed successfully at ESR, where the preliminary result about the cross section of proton induced reaction 96Ru(p, γ)97Rh at energy of about 10 AMeV is given in Ref. [4]. A new experiment at ESR has been proposed to measure the cross section of proton induced reaction 112Sn(p, γ)113Sb near Gamow window of p process. Project was supported by Helmholtz International Center for FAIR and Helmholtz Young Investigator Group VH-NG-327.
[1] M. Arnould and S. Goriely, Phys. Rep. 384 (2003) 1.
[2] B. Franzke, Nucl. Instr. and Meth. B 24/25 (1987) 18.
[3] J. W. Xia et al., Nucl. Instr. and Meth. A 488 (2002) 11.
[4] Q. Zhong et al., Journal of Physics: Conference Series 202 (2010) 012011.