First evidence of multiple beta-delayed neutron emission for isotopes with A > 100

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Caballero-Folch , R , Dillmann , I , Agramunt , J , Tan , J L , Domingo-Pardo , C , Algora , A , Aysto , J , Calvino , F , Canete , L , Cortes , G , Eronen , T , Ganioglu , E , Gelletly , W , Gorelov , D , Guadilla , V , Hakala , J , Jokinen , A , Kankainen , A , Kolhinen , V , Koponen , J , Marta , M , Mendoza , E , Montaner-Piza , A , Moore , I , Nobs , C , Orrigo , S , Penttila , H , Pohjalainen , I , Reinikainen , J , Riego , A , Rinta-Antila , S , Rubio , B , Salvador-Castineira , P , Simutkin , V & Voss , A 2017 , ' First evidence of multiple beta-delayed neutron emission for isotopes with A > 100 ' , Acta Physica Polonica. B , vol. 48 , no. 3 , pp. 517-522 . https://doi.org/10.5506/APhysPolB.48.517

Title: First evidence of multiple beta-delayed neutron emission for isotopes with A > 100
Author: Caballero-Folch, R.; Dillmann, I.; Agramunt, J.; Tan, J. L.; Domingo-Pardo, C.; Algora, A.; Aysto, J.; Calvino, F.; Canete, L.; Cortes, G.; Eronen, T.; Ganioglu, E.; Gelletly, W.; Gorelov, D.; Guadilla, V.; Hakala, J.; Jokinen, A.; Kankainen, A.; Kolhinen, V.; Koponen, J.; Marta, M.; Mendoza, E.; Montaner-Piza, A.; Moore, I.; Nobs, Ch.; Orrigo, S.; Penttila, H.; Pohjalainen, I.; Reinikainen, J.; Riego, A.; Rinta-Antila, S.; Rubio, B.; Salvador-Castineira, P.; Simutkin, V.; Voss, A.
Contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2017-03
Language: eng
Number of pages: 6
Belongs to series: Acta Physica Polonica. B
ISSN: 0587-4254
URI: http://hdl.handle.net/10138/312704
Abstract: The beta-delayed neutron emission probability, P-n, of very neutron-rich nuclei allows us to achieve a better understanding of the nuclear structure above the neutron separation energy, S-n. The emission of neutrons can become the dominant decay process in neutron-rich astrophysical phenomena such as the rapid neutron capture process (r-process). There are around 600 accessible isotopes for which beta-delayed one-neutron emission (beta 1n) is energetically allowed, but the branching ratio has only been determined for about one third of them. beta 1n decays have been experimentally measured up to the mass A similar to 1 5 0, plus a single measurement of Tl-210. Concerning two-neutron emitters (beta 2n), similar to 3 0 0 isotopes are accessible and only 24 have been measured so far up to the mass A = 100. In this contribution, we report recent experiments which allowed the measurement of beta 1n emitters for masses beyond A > 200 and N > 1 2 6 and identified the heaviest beta 2n emitter measured so far, Sb-136.
Subject: 114 Physical sciences
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