Proton capture on $$^{90}$$Zr revisited

Le résumé fourni par la source

Abstract The $$^{90}$$ 90 Zr(p, $$\gamma $$ γ ) $$^{91}$$ 91 Nb reaction is one of the important reactions in the $$A\approx 90$$ A ≈ 90 mass region and part of the nucleosynthesis path responsible for production of $$^{92}$$ 92 Mo during the $$\gamma $$ γ -process. Discrepant data in the literature provide a cross section that varies up to 30% within the Gamow window for the $$^{90}$$ 90 Zr(p, $$\gamma $$ γ ) $$^{91}$$ 91 Nb reaction. Thus, the cross section measurements of $$^{90}$$ 90 Zr(p, $$\gamma $$ γ ) $$^{91}$$ 91 Nb reaction were revisited using the $$\gamma $$ γ -summing technique. The results are consistent with the lower-value cross sections found in the literature. Based on the new data an updated reaction rate for $$^{90}$$ 90 Zr(p, $$\gamma $$ γ ) $$^{91}$$ 91 Nb is provided that is up to 20% higher than that obtained from the non-smoker code.

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