Electron Capture and Beta-Decay Rates for the Collapse of O+Ne+Mg Cores

Hua Lam, Yi; Martínez-Pinedo, Gabriel; Langanke, Karlheinz; Jones, Samuel; Hirschi, Raphael; Zegers, Remco G. T.; Alex Brown, B.

Abstract

We present a new set of electron (e−) capture and β-decay rates that improves previous calculations by Takahara et al. and Oda et al. by: (a) incorporation of recent charge-exchange and β-decay data, (b) contributions of forbidden transitions, and (c) inclusion of e− screening corrections. The experimental nuclear input is supplemented by theoretical data based on large-scale shell model calculations in the full sd-shell space using the USDB interaction. The impact of these new rates on the late-stage stellar evolution of 8.8M⊙ star is demonstrated.

Citation

Hua Lam, Y., Martínez-Pinedo, G., Langanke, K., Jones, S., Hirschi, R., Zegers, R. G. T., & Alex Brown, B. Electron Capture and Beta-Decay Rates for the Collapse of O+Ne+Mg Cores. Presented at EPJ Web of Conferences - INPC 2013 – International Nuclear Physics Conference

• Presentation Conference Type: Conference Paper (published)
• Conference Name: EPJ Web of Conferences - INPC 2013 – International Nuclear Physics Conference
• Online Publication Date: Mar 20, 2014
• Publication Date: 2014
• Deposit Date: Jun 15, 2023
• Journal: EPJ Web of Conferences
• Print ISSN: 2100-014X
• Electronic ISSN: 2100-014X
• Publisher: Società Italiana di Fisica
• Peer Reviewed: Peer Reviewed
• Volume: 66
• Article Number: 07011
• DOI: https://doi.org/10.1051/epjconf/20146607011
• Keywords: General Earth and Planetary Sciences; General Engineering; General Environmental Science
• Public URL: https://keele-repository.worktribe.com/output/467570