{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 · Thu Nov 15 00:00:00 EST 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.055807· OSTI ID:21067938

Kiss, G G; Gyuerky, Gy; Elekes, Z; Fueloep, Zs; Somorjai, E; Rauscher, T; Wiescher, M ^[1]

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1. 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

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ARSENIC 71
ARSENIC 76
COMPUTERIZED SIMULATION
CROSS SECTIONS
GERMANIUM 70 TARGET
GERMANIUM 76 TARGET
HAUSER-FESHBACH THEORY
N CODES
NEUTRONS
NUCLEAR DECAY
NUCLEAR POTENTIAL
PROTON REACTIONS
SENSITIVITY
STATISTICAL MODELS