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β -decay and β -delayed Neutron Emission Measurements at GSI-FRS Beyond N=126N=126, for r-process Nucleosynthesis

Abstract : New measurements of very exotic nuclei in the neutron-rich region beyond N=126 have been performed at the GSI facility with the fragment separator (FRS). The aim of the experiment is to determine half-lives and β-delayed neutron emission branching ratios of isotopes of Hg, Tl and Pb in this region. This contribution summarizes final counting statistics for identification and for implantation, as well as the present status of the data analysis of the half-lives. In summary, isotopes of Pt, Au, Hg, Tl, Pb, Bi, Po, At, Rn and Fr were clearly identified and several of them (208-211Hg, 211-215Tl, 214-218Pb) were implanted with enough statistics to determine their half-lives. About half of them are expected to be neutron emitters, in such cases it will become possible to obtain the neutron emission probabilities, Pn.
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http://hal.in2p3.fr/in2p3-01074169
Contributor : Sophie Heurteau <>
Submitted on : Monday, October 13, 2014 - 11:12:05 AM
Last modification on : Wednesday, September 16, 2020 - 4:08:37 PM

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R. Caballero-Folch, C. Domingo-Pardo, G. Cortès, J.L. Taín, J. Agramunt, et al.. β -decay and β -delayed Neutron Emission Measurements at GSI-FRS Beyond N=126N=126, for r-process Nucleosynthesis. Nuclear Data Sheets, Elsevier, 2014, 120, pp.81-83. ⟨10.1016/j.nds.2014.07.012⟩. ⟨in2p3-01074169⟩

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