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

Journal Article · Sun Jun 15 00:00:00 EDT 2014 · Nuclear Data Sheets

DOI:https://doi.org/10.1016/J.NDS.2014.07.012· OSTI ID:22436690

Domingo-Pardo, C. ^[1]; Cortès, G. ^[2]; Taín, J. L.; Agramunt, J. ^[1]; Algora, A. ^[1]; Ameil, F. ^[3]; Ayyad, Y.; Benlliure, J. ^[4]; Bowry, M. ^[5]; Calviño, F. ^[2]; Cano-Ott, D. ^[6]; Davinson, T. ^[7]; others, and

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1. Institut de Física Corpuscular, CSIC-Universitat de València, E-46071 València (Spain)
2. Deptartament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, E-08028 Barcelona (Spain)
3. GSI Helmholtzzentrum für Schwerionenforschung, D-64291, Darmstadt (Germany)
4. Universidade de Santiago de Compostela, E-15782, Santiago de Compostela (Spain)
5. Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom)
6. Centro de Investigaciones energéticas Medioambientales y Tecnológicas, Madrid (Spain)
7. School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ United Kingdom (United Kingdom)

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.

• OSTI ID: 22436690
• Journal Information: Nuclear Data Sheets, Vol. 120; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0090-3752
• Country of Publication: United States
• Language: English

Related Subjects

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