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Ground-state proton decay of 69Br and implications for the rp-process 68Se waiting-point

Abstract : The first direct measurement of the proton separation energy, S p, for the proton-unbound nucleus 69Br is reported. Of interest is the exponential dependence of the 2p-capture rate on S p which can bypass the 68Se waiting-point in the astrophysical rp process. An analysis of the observed proton decay spectrum is given in terms of the 69Se mirror nucleus and the influence of S p is explored within the context of a single-zone X-ray burst model.
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Contributor : Sandrine Guesnon <>
Submitted on : Friday, April 27, 2012 - 11:44:07 AM
Last modification on : Tuesday, February 19, 2019 - 9:56:01 AM

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A.M. Rogers, W.G. Lynch, M.A. Famiano, M.S. Wallace, F. Amorini, et al.. Ground-state proton decay of 69Br and implications for the rp-process 68Se waiting-point. International Nuclear Physics Conference 2010, INPC2010, Jul 2010, Vancouver, Canada. pp.042020, ⟨10.1088/1742-6596/312/4/042020⟩. ⟨in2p3-00691885⟩

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