First Measurement of Several β -Delayed Neutron Emitting Isotopes Beyond N=126

R. Caballero-Folch, C. Domingo-Pardo, J. Agramunt, A. Algora, Thomas Davinson, Philip Woods

Research output: Contribution to journalLetterpeer-review

Abstract / Description of output

The β-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with β-decay half-lives for 20 isotopes of Au, Hg, Tl, Pb, and Bi in the mass region N≳126. These are the heaviest species where neutron emission has been observed so far. These measurements provide key information to evaluate the performance of nuclear microscopic and phenomenological models in reproducing the high-energy part of the β-decay strength distribution. This provides important constraints on global theoretical models currently used in r-process nucleosynthesis.
Original languageEnglish
Article number012501
JournalPhysical Review Letters
Publication statusPublished - 29 Jun 2016


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