Novel technique for constraining r -process (n, γ) reaction rates

A. Spyrou, S. N. Liddick, A. C. Larsen, M. Guttormsen, K. Cooper, A. C. Dombos, D. J. Morrissey, F. Naqvi, G. Perdikakis, S. J. Quinn, T. Renstrøm, J. A. Rodriguez, A. Simon, C. S. Sumithrarachchi, R. G.T. Zegers

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A novel technique has been developed, which will open exciting new opportunities for studying the very neutron-rich nuclei involved in the r process. As a proof of principle, the γ spectra from the β decay of Ga76 have been measured with the SuN detector at the National Superconducting Cyclotron Laboratory. The nuclear level density and γ-ray strength function are extracted and used as input to Hauser-Feshbach calculations. The present technique is shown to strongly constrain the Ge75(n,γ)Ge76 cross section and reaction rate.

Original languageEnglish
Article number232502
JournalPhysical Review Letters
Issue number23
StatePublished - Dec 2 2014


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