Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Ground-State Proton Decay of 69Br and Implications for the 68Se Astrophysical Rapid Proton-Capture Process Waiting Point

Abstract : We report on the first direct measurement of the proton separation energy for the proton-unbound nucleus 69Br. Bypassing the 68Se waiting point in the rp process is directly related to the 2p-capture rate through 69Br, which depends exponentially on the proton separation energy. We find a proton separation energy for 69Br of Sp(69Br)=-785-40+34  keV; this is less bound compared to previous predictions which have relied on uncertain theoretical calculations. The influence of the extracted proton separation energy on the rp process occurring in type I x-ray bursts is examined within the context of a one-zone burst model.
Liste complète des métadonnées

http://hal.in2p3.fr/in2p3-00606207
Contributeur : Sandrine Guesnon <>
Soumis le : mardi 6 septembre 2011 - 10:56:56
Dernière modification le : mardi 19 février 2019 - 09:56:01

Lien texte intégral

Identifiants

Citation

A.M. Rogers, M.A. Famiano, W.G. Lynch, M.S. Wallace, F. Amorini, et al.. Ground-State Proton Decay of 69Br and Implications for the 68Se Astrophysical Rapid Proton-Capture Process Waiting Point. Physical Review Letters, American Physical Society, 2011, 106, pp.252503. ⟨10.1103/PhysRevLett.106.252503⟩. ⟨in2p3-00606207⟩

Partager

Métriques

Consultations de la notice

193