Beta-decay properties of exotic nuclei and the astrophysical r-process |
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| Institution: | 1. Advanced Research Center for Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku, 169 Tokyo, Japan;2. Institut d''Astronomie et d''Astrophysique, Université Libre de Bruxelles CP-226, Campus Plaine, Boulevard du Triomphe, B-1050, Bruxelles, Belgique;1. Dip. Fisica, Sapienza Univ. di Roma, Roma, Italy;2. INFN Sezione di Roma, Roma, Italy;3. Dip. Scienze di Base e Applicate per l''Ingegneria, Sapienza Univ. di Roma, Roma, Italy;4. Museo Storico della Fisica e Centro Studi e Ricerche ‘E. Fermi’, Roma, Italy;5. Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Roma, Italy;6. Laboratori Nazionali di Frascati dell''INFN, Frascati, Italy;1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;1. Kyoto University, Kitashirakawaoiwakecho Sakyoku Kyotoshi, Kyoto 606–8502, Japan;2. Kamioka Observatory, ICRR, The University of Tokyo, 456 Higashimozumi Kamiokacho Hidashi Gifu, 506–1205, Japan;3. RCNS, Tohoku University, 6–3 Aramakiazaaoba, Aoba-ku Sendai-shi, Miyagi 980–8578, Japan;4. Kobe University, Rokodai, Nada-ku Kobe-shi, Hyogo 657–8501, Japan;1. Brookhaven National Laboratory, Upton, NY 11973, United States;2. Laurentian University, Sudbury, Canada;3. SNOLAB, Creighton Mine, Sudbury, Canada;4. Queen University, Kingston, Canada;5. University of Oxford, Oxford OX1 3RH, UK;1. Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA;2. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA;3. Centre d''Etudes Nucléaires de Bordeaux-Gradignan, Université Bordeaux 1, UMR 5797 CNRS/IN2P3, Chemin du Solarium, BP 120, F-33175, Gardignan Cedex, France;4. GANIL CEA/DSM-CNRS/IN2P3, Boulevard Henri Becquerel, BP55027, 14076 CEAN Cedex 5, France;1. Dipartimento di Fisica, Università di Milano-Bicocca, Milano I-20126 - Italy;2. INFN - Sezione di Milano Bicocca, Milano I-20126 - Italy;3. Department of Physics and Astronomy, University of South Carolina, Columbia, SC 29208 - USA;4. INFN - Laboratori Nazionali di Legnaro, Legnaro (Padova) I-35020 - Italy;5. INFN - Laboratori Nazionali del Gran Sasso, Assergi (L''Aquila) I-67010 - Italy;6. Department of Physics, University of California, Berkeley, CA 94720 - USA;7. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 - USA;8. INFN - Sezione di Bologna, Bologna I-40127 - Italy;9. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 - USA;10. Dipartimento di Fisica, Sapienza Università di Roma, Roma I-00185 - Italy;11. INFN - Sezione di Roma, Roma I-00185 - Italy;12. Dipartimento di Fisica, Università di Genova, Genova I-16146 - Italy;13. INFN - Sezione di Genova, Genova I-16146 - Italy;14. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 - China;15. Department of Physics, Yale University, New Haven, CT 06520 - USA;p. Department of Physics, University of Wisconsin, Madison, WI 53706 - USA;q. INFN - Laboratori Nazionali di Frascati, Frascati (Roma) I-00044 - Italy;r. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, 91405 Orsay Campus - France;s. Physics Department, California Polytechnic State University, San Luis Obispo, CA 93407 - USA;t. Department of Materials Science and Engineering, University of California, Berkeley, CA 94720 - USA;u. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 - USA;v. Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 - USA;w. Laboratorio de Fisica Nuclear y Astroparticulas, Universidad de Zaragoza, Zaragoza 50009 - Spain;x. Service de Physique des Particules, CEA/Saclay, 91191 Gif-sur-Yvette - France;y. Lawrence Livermore National Laboratory, Livermore, CA 94550 - USA;z. Department of Nuclear Engineering, University of California, Berkeley, CA 94720 - USA;11. INFN - Sezione di Padova, Padova I-35131 - Italy;12. Dipartimento di Fisica, Università di Firenze, Firenze I-50125 - Italy;13. INFN - Sezione di Firenze, Firenze I-50125 - Italy;14. SUPA, Institute for Astronomy, University of Edimburgh, Blackford Hill, Edinburgh EH93HJ - UK;15. Dipartimento di Fisica, Università di Bologna, Bologna I-40127 - Italy |
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| Abstract: | The r-process abundances are evaluated with the use of three different β-decay models, i.e., the second version of the Gross Theory, the semi-Gross Theory and a QRPA approach. The necessary Qβ-values, as well as the neutron separation energies, are obtained from the TUYY, ETFSI and FRDM mass predictions. A comparison is made among the β-decay half-lives predicted by these β-decay models for the nuclei on a typical r-process path, as well as among the resulting r-process abundances. |
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