Cd-106 and Sn-112: Alpha-induced cross section measurements for the astrophysical p-process


Palumbo A., Gorres J., Lee H., Wiescher M., Rapp W., Ozkan N. , ...More

12th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Indiana, United States Of America, 4 - 09 September 2005, vol.819, pp.585-586 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 819
  • City: Indiana
  • Country: United States Of America
  • Page Numbers: pp.585-586

Abstract

The simulation of p-process nucleosynthesis requires thousands of reaction rates. These rates are typically calculated with the statistical Hauser Feshbach Model (HF-Model) which depends critically on the reliability of the optical nucleus potential. In particular, the predicted (alpha,gamma) cross sections at low energies (below 20 MeV) are sensitive to the choice of the alpha potential. Dscrepancies have been observed between the experimental cross sections and the theoretical values (NON-SMOKER). Currently, only a few alpha-induced reaction rates have been measured. To explore the trend Cd-106(alpha,gamma)Sn-110 and Sn-112(alpha,gamma)Te-116 cross sections were measured at the Notre Dame FN Tandem accelerator. First results are presented and discussed.