Systematic study of ($p,\ensuremath{\gamma}$) reactions on Ni isotopes

Systematic study of ( $p, γ$ ) reactions on Ni isotopes

A. Simon et al.

Phys. Rev. C 87, 055802 – Published 9 May 2013

Abstract

A systematic study of the radiative proton capture reaction for all stable nickel isotopes is presented. The results were obtained using 2.0–6.0 MeV protons from the 11-MV tandem Van de Graaff accelerator at the University of Notre Dame. The $γ$ rays were detected by the NSCL-SuN detector utilizing the $γ$ -summing technique. The results are compared to a compilation of earlier measurements and discrepancies between the previous data are resolved. The experimental results are also compared to the theoretical predictions obtained using the non-smoker and smaragd codes. Based on these comparisons an improved set of astrophysical reaction rates is proposed for the ( $p, γ$ ) reactions on the stable nickel isotopes as well as for the $^{56}$ Ni( $p, γ$ ) $^{57}$ Cu reaction.