$\alpha$-induced cross section of $^{120}$Te for the astrophysical p process

ORAL

Abstract

There are about 35 nuclei found in nature, which are not susceptible to neutron capture and are explained by the p-process. The modeling for this process requires thousands of nuclear reactions involving both stable and unstable nuclei including ($\alpha, \alpha$), ($\alpha, p$) and ($\alpha, \gamma$) reactions. In a recent experiment, the cross section of the reaction $^{120}$Te($\alpha,p$)$^{123}$I was measured in the energy range of astrophysical interest for the p-process. The $\alpha$ beam from the Notre Dame FN Tandem Van de Graaff accelerator bombarded highly enriched self-supporting $^{120}$Te targets and the $\gamma$-rays from the activated $^{123}$I was counted with a pair of Ge clover detectors in close geometry. Preliminary results will be presented.

*This work is supported by the NSF under grant No. PHY07-58100 and PHY08-22648.

Authors

  • A. Kontos

    • Univ. of Notre Dame
  • W.P. Tan

    • Univ. of Notre Dame
  • R.T. G\"{u}ray

    • Kocaeli University, Turkey
  • N. \"{O}zkan

    • Kocaeli University, Turkey
  • S.R. Lesher

    • Univ. of Wisconsin - La Crosse
  • A. Arend

    • Univ. of Wisconsin - La Crosse
  • A. Aprahamian

    • Univ. of Notre Dame
  • S. Almaraz-Calderon

    • Univ. of Notre Dame