Ge<mml:mprescripts/><mml:none/>70(p,γ)As<mml:mprescripts/><mml:none/>71andGe<mml:mprescripts/><mml:none/>76(p,n)As<mml:mprescripts/><mml:none/>76cross sections for the astrophysicalpprocess: Sensitivity of the optical proton potential at low energies

2007/11/07 by G. G. Kiss, G. Kiss, Gy. Gyürky +7 · 2 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Astronomical and nuclear sciences #Nuclear physics research studies #nucl-ex

paper · pdf · doi:10.1103/physrevc.76.055807

published as Phys.Rev.C76:055807,2007 · Accepted for publication in Phys. Rev. C

arxiv created 2007/11/07 · openalex publication_date 2007/11/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

The cross sections of the ⁷⁰Ge(p,\ensuremathγ)⁷¹As and ⁷⁶Ge(p,n)⁷⁶As reactions have been measured with the activation method in the Gamow window for the astrophysical p process. The experiments were carried out at the Van de Graaff and cyclotron accelerators of ATOMKI. The cross sections have been derived by measuring the decay \ensuremathγ-radiation of the reaction products. The results are compared to the predictions of Hauser-Feshbach statistical model calculations using the code NON-SMOKER. Good agreement between theoretical and experimental S factors is found. Based on the new data, modifications of the optical potential used for low-energy protons are discussed.

Citations

• Branchings in the γ process path revisited
• rp-process nucleosynthesis at extreme temperature and density conditions

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