New thermonuclear reaction rates of 64Ge(p,γ)65As and 65As(p, γ)66Se for type-I x-ray bursts

• Published in: EPJ Web of Conferences Vol. 109; p. 05005
• Main Authors: Lam, Yi Hua, He, Jianjun, Parikh, Anuj, Brown, B Alex
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Les Ulis EDP Sciences 01-01-2016
• Subjects: Gamma rays; Model testing; Nuclear structure; Post-processing
• ISSN: 2101-6275; 2100-014X
• DOI: 10.1051/epjconf/201610905005

We present a new set of 64Ge(p, γ)65As and 65As(p, γ)66Se reaction rates based on recently evaluated proton separation energies Sp(65As) and Sp(66Se), and nuclear structure data from large-scale shell model calculations. Our new 64Ge(p,g) rate differs from those available in REACLIB by up to two orders of magnitude at temperatures encountered within type I X-ray bursts. We used one-zone post-processing type-I x-ray burst model to test our new rates, and present the astrophysical impact of these rates.