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        (70)Ge(p,gamma)(71)As and (76)Ge(p,n)(76)As cross sections for the astrophysical p process : Sensitivity of the optical proton potential at low energies

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        904930.pdf (PDF, 998Kb)
        Author
        Kiss, G. G.
        Gyuerky, Gy.
        Elekes, Z.
        Fueloep, Zs.
        Somorjai, E.
        Rauscher, T.
        Attention
        2299/10891
        Abstract
        The cross sections of the (70)Ge(p,gamma)(71)As and (76)Ge(p,n)(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.
        Publication date
        2007-11
        Published in
        Physical Review C
        Published version
        https://doi.org/10.1103/PhysRevC.76.055807
        Other links
        http://hdl.handle.net/2299/10891
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