ReactionAr36(p,γ)37K in explosive hydrogen burning

The reaction ${}_{}{}^{36}{}_{}{}^{}\mathrm{Ar}$(p,γ${)}^{37}$K has been measured in the proton energy range of ${\mathit{E}}_{\mathit{p}}$=0.32–0.93 MeV. A new resonance was found at ${\mathit{E}}_{\mathit{R}}$=321 keV. We have measured the branching ratios and the resonance strength. The stellar reaction rates which are dominated by this resonance for temperatures T=0.07–0.9 GK are calculated. Network calculations have been performed to investigate the influence of the new stellar rates on the time evolution of the ${}_{}{}^{36}{}_{}{}^{}\mathrm{Ar}$ abundance during explosive H burning.