Odd p isotope In-113: Measurement of alpha-induced reactions

C. Yalcin, R. T. Guray, N. Ozkan, S. Kutlu, Gy. Gyurky, J. Farkas, G. G. Kiss, Zs. Fulop, A. Simon, E. Somorjai, T. Rauscher

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Abstract

One of the few p nuclei with an odd number of protons is In-113. Reaction cross sections of In-113(alpha,gamma)Sb-117 and In-113(alpha,n)Sb-116 have been measured with the activation method at center-of-mass energies between 8.66 and 13.64 MeV, close to the astrophysically relevant energy range. The experiments were carried out at the cyclotron accelerator of ATOMKI. The activities were determined by off-line detection of the decay gamma rays with a HPGe detector. Measured cross sections and astrophysical S factor results are presented and compared with statistical model calculations using three different alpha+nucleus potentials. The comparison indicates that the standard rates used in the majority of network calculations for these reactions were too fast due to the energy dependence of the optical alpha potential at low energy.

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Original languageEnglish
Article number065801
Number of pages9
JournalPhysical Review C (nuclear physics)
Volume79
Issue number6
DOIs
Publication statusPublished - Jun 2009

Keywords

  • NUCLEAR
  • CROSS-SECTION MEASUREMENTS
  • STATISTICAL-MODEL CALCULATIONS
  • SCATTERING
  • ENERGIES
  • MASSIVE STARS
  • PARTICLES
  • RELEVANT
  • ASTROPHYSICAL REACTION-RATES
  • NUCLEOSYNTHESIS

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