The rp-process waiting-point nucleus 68Se and its astrophysical implications

Wöhr, A.; Aprahamian, A.; Boutachkov, P.; Galache, J. L.; Görres, J.; Shawcross, M.; Teymurazyan, A.; Wiescher, M. C.; Brenner, D. S.; Davids, C. N.; Fischer, S. M.; Heinz, A. M.; Janssens, R. V.F.; Seweryniak, D.

doi:10.1016/j.nuclphysa.2004.06.024

The rp-process waiting-point nucleus ⁶⁸Se and its astrophysical implications

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Nuclear Physics. A

DOI:https://doi.org/10.1016/j.nuclphysa.2004.06.024· OSTI ID:832828

Wöhr, A. ^[1]; Aprahamian, A.; Boutachkov, P.; Galache, J. L.; Görres, J.; Shawcross, M.; Teymurazyan, A.; Wiescher, M. C.; Brenner, D. S.; Davids, C. N.; Fischer, S. M.; Heinz, A. M.; Janssens, R. V.F.; Seweryniak, D.

Clark University

Precise mass measurements of nuclei along the N=Z line are important input parameters for simulations of the rp-process. Of particular interest is the mass of the ⁶⁸Se rp-process waiting point nucleus for determining the possibility of a two-proton capture branch bypassing its slow beta decay. The mass of ⁶⁸Se was measured via the beta decay endpoint. Evaluations of proton separation energies based on the measured mass lead to the conclusion that ⁶⁸Se is indeed a waiting point for the rp process.

Research Organization:: Clark Univ., Worcester, MA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: FG02-88ER40417

OSTI ID:: 832828

Report Number(s):: DOE/ER/40417-201

Journal Information:: Nuclear Physics. A, Journal Name: Nuclear Physics. A Journal Issue: 3-4 Vol. 742; ISSN 0375-9474

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

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