https://doi.org/10.1051/epjconf/202226003005
Competition between allowed and first-forbidden β decays and the r-process
Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
* e-mail: z.podolyak@surrey.ac.uk
Published online: 24 February 2022
β− decay lifetimes are essential ingredients for r-process yield calculations. In N≈126 r-process waiting point nuclei first-forbidden and allowed β decays are expected to compete. Recent experiments performed at CERN/ISOLDE showed that 207,208Hg decay predominantly via first-forbidden decays. In addition, following on a high statistics study of the β+ /EC decay of 208At, it is suggested that the Z>82, N<126 nuclei provide an excellent testing ground for global calculations addressing the competition between first-forbidden and allowed β decays.
© The Authors, published by EDP Sciences, 2022
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