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

A. M. Rogers, W. G. Lynch, M. A. Famiano, M. S. Wallace, F. Amorini, D. Bazin, R. J. Charity, F. Delaunay, R. T. De Souza, J. Elson, A. Gade, D. Galaviz, S. Hudan, J. Lee, S. Lobostov, S. Lukyanov, M. Matoš, M. Mocko, M. B. Tsang, D. ShapiraL. G. Sobotka, G. Verde

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

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 Sp 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 Sp is explored within the context of a single-zone X-ray burst model.

Original languageEnglish
Article number042020
JournalJournal of Physics: Conference Series
Volume312
Issue numberSECTION 4
DOIs
StatePublished - 1 Jan 2011
Externally publishedYes
EventInternational Nuclear Physics Conference 2010, INPC2010 - Vancouver, BC, Canada
Duration: 4 Jul 20109 Jul 2010

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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