{sup 70}Ge(p,{gamma}){sup 71}As and {sup 76}Ge(p,n){sup 76}As cross sections for the astrophysical p process: Sensitivity of the optical proton potential at low energies
Journal Article
·
· Physical Review. C, Nuclear Physics
- Institute of Nuclear Research (ATOMKI), H-4001 Debrecen, POB.51. (Hungary)
The cross sections of the {sup 70}Ge(p,{gamma}){sup 71}As and {sup 76}Ge(p,n){sup 76}As 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 {gamma}-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.
- OSTI ID:
- 21067938
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 76, Issue 5; Other Information: DOI: 10.1103/PhysRevC.76.055807; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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