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arXiv · 1404.2062

Strength of the $E_{\text{p}}$=1.842 MeV resonance in the $^{40}$Ca(p,$γ$)$^{41}$Sc reaction revisited

Konrad Schmidt·Shavkat Akhmadaliev·Michael Anders·Daniel Bemmerer·Antonio Caciolli·Mirco Dietz·Zoltán Elekes·Arnd R. Junghans·Marie-Luise Menzel·Ronald Schwengner·Andreas Wagner·Kai Zuber
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Abstract

The strength of the $E_{\rm p} = 1.842$ MeV resonance in the $^{40}$Ca(p,$γ$)$^{41}$Sc reaction is determined with two different methods: First, by an absolute strength measurement using calcium hydroxide targets, and second, relative to the well-determined strength of the resonance triplet at $E_α$ = 4.5 MeV in the $^{40}$Ca($α$,$γ$)$^{44}$Ti reaction. The present new value of $ωγ=(0.192\pm0.017)$ eV is 37% (equivalent to $3.5σ$) higher than the evaluated literature value. In addition, the ratio of the strengths of the 1.842 MeV $^{40}$Ca(p,$γ$)$^{41}$Sc and 4.5 MeV $^{40}$Ca($α$,$γ$)$^{44}$Ti resonances has been determined to be $0.0229\pm0.0018$. The newly corrected strength of the 1.842-MeV resonance can be used in the future as a normalization point for experiments with calcium targets.

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Konrad Schmidt, Shavkat Akhmadaliev, Michael Anders, Daniel Bemmerer, Antonio Caciolli, Mirco Dietz, Zoltán Elekes, Arnd R. Junghans, Marie-Luise Menzel, Ronald Schwengner, Andreas Wagner, Kai Zuber. 2014-04-08. Strength of the $E_{\text{p}}$=1.842 MeV resonance in the $^{40}$Ca(p,$γ$)$^{41}$Sc reaction revisited. https://doi.org/10.1103/physrevc.89.045802

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