Electron Capture Processes in Intermediate Mass stars
Idini, A., Brown, A., Langanke, K., & Martínez-Pinedo, G. (2015). Electron Capture Processes in Intermediate Mass stars. Proceedings of Science, 2014 (NIC XIII), 002. Retrieved from http://pos.sissa.it/archive/conferences/204/002/NIC%20XIII_002.pdf
Published inProceedings of Science
© the Author(s). This is an open access article published under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Intermediate mass stars develop a degenerate core constituted of O, Ne and Mg during their evolution. As the density in the core increases electron capture sets in igniting Ne and O burning. Particularly important is electron capture on 20Ne that has been found recently to be dominated by a second forbidden transition from the 0+ ground state of 20Ne to the 2+ ground state of 20F. We have performed shell–model calculations to determine the transition strength and provide an updated value of the electron capture rate and the expected branching ratio to the corresponding β–decay process.