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

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 ({sup 208-211}Hg, {sup 211-215}Tl, {sup 214-218}Pb) 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.
Authors:
 [1] ;  [2] ;  [1] ; ;  [2] ;  [2] ;  [3] ;  [4] ; ;  [5] ;  [6] ;  [1] ;  [7] ;  [8] ;
  1. Deptartament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, E-08028 Barcelona (Spain)
  2. Institut de Física Corpuscular, CSIC-Universitat de València, E-46071 València (Spain)
  3. (Hungary)
  4. GSI Helmholtzzentrum für Schwerionenforschung, D-64291, Darmstadt (Germany)
  5. Universidade de Santiago de Compostela, E-15782, Santiago de Compostela (Spain)
  6. Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom)
  7. Centro de Investigaciones energéticas Medioambientales y Tecnológicas, Madrid (Spain)
  8. School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ United Kingdom (United Kingdom)
Publication Date:
OSTI Identifier:
22436690
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Data Sheets; Journal Volume: 120; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASTATINE ISOTOPES; BETA-DELAYED NEUTRONS; BISMUTH ISOTOPES; BRANCHING RATIO; DATA ANALYSIS; FRANCIUM ISOTOPES; GOLD ISOTOPES; HALF-LIFE; LEAD ISOTOPES; MERCURY ISOTOPES; NEUTRON EMISSION; NUCLEOSYNTHESIS; POLONIUM ISOTOPES; R PROCESS; RADON ISOTOPES; THALLIUM ISOTOPES