(α,γ) cross section measurements in the region of light p nuclei

S. J. Quinn, A. Spyrou, A. Simon, A. Battaglia, M. Bowers, B. Bucher, C. Casarella, M. Couder, P. A. Deyoung, A. C. Dombos, J. Görres, A. Kontos, Q. Li, A. Long, M. Moran, N. Paul, J. Pereira, D. Robertson, K. Smith, M. K. SmithE. Stech, R. Talwar, W. P. Tan, M. Wiescher

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The Zr90(α,γ)Mo94,Zr92(α,γ)Mo96, and Ge74(α,γ)Se78 reaction cross sections were measured for the first time in an effort to expand the existing experimental database for (α,γ) reactions relevant for the production of p nuclei in the universe. In particular, the Zr90(α,γ)Mo94 reaction was identified by a sensitivity study for its potential impact on the γ-process mass flow in the region of light p nuclei. The measurements were performed for energies Eα=9.5-12.0 MeV at the University of Notre Dame using the SuN detector and the γ-summing technique. The results are compared to theoretical calculations from the talys and non-smoker nuclear reaction codes, and it is shown that the data greatly reduce the uncertainty in the cross section for the measured energies. The talys parameters that provide the best description of the experimental data are reported.

Original languageEnglish
Article number045805
JournalPhysical Review C - Nuclear Physics
Volume92
Issue number4
DOIs
StatePublished - 19 Oct 2015
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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