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https://doi.org/10.1140/epja/s10050-025-01521-9

Simon, A.; Koros, J.; Olivas-Gomez, O.; Kelmar, R.; Churchman, E.; Clark, A_M; Harris, C.; Henderson, S_L; Kelly, S_E; Millican, P.; et al (March 2025, The European Physical Journal A)

Abstract The$$^{90}$$

^{90}

Zr(p,$$\gamma $$

γ

)$$^{91}$$

^{91}

Nb reaction is one of the important reactions in the$$A\approx 90$$

A \approx 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 thenon-smokercode.

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