β-decay half-lives of 55 neutron-rich isotopes beyond the N=82 shell gap

作     者：J. Wu S. Nishimura P. Möller M. R. Mumpower R. Lozeva C. B. Moon A. Odahara H. Baba F. Browne R. Daido P. Doornenbal Y. F. Fang M. Haroon T. Isobe H. S. Jung G. Lorusso B. Moon Z. Patel S. Rice H. Sakurai Y. Shimizu L. Sinclair P.-A. Söderström T. Sumikama H. Watanabe Z. Y. Xu A. Yagi R. Yokoyama D. S. Ahn F. L. Bello Garrote J. M. Daugas F. Didierjean N. Fukuda N. Inabe T. Ishigaki D. Kameda I. Kojouharov T. Komatsubara T. Kubo N. Kurz K. Y. Kwon S. Morimoto D. Murai H. Nishibata H. Schaffner T. M. Sprouse H. Suzuki H. Takeda M. Tanaka K. Tshoo Y. Wakabayashi 

作者机构：Physics Division Argonne National Laboratory Argonne Illinois 60439 USA RIKEN Nishina Center 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan P. Moller Scientific Computing and Graphics Inc. P. O. Box 1440 Los Alamos New Mexico 87544 USA Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA IPHC IN2P3/CNRS University of Strasbourg F-67037 Strasbourg Cedex 2 France CSNSM IN2P3/CNRS University Paris-Saclay F-91405 Orsay Campus France Faculty of Science Hoseo University Chung-Nam 31499 Republic of Korea Department of Physics Osaka University Machikaneyama-machi 1-1 Osaka 560-0043 Toyonaka Japan School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ United Kingdom Department of Physics Chung-Ang University Seoul 06974 Republic of Korea National Physical Laboratory NPL Teddington Middlesex TW11 0LW United Kingdom Department of Physics University of Surrey Guildford GU2 7XH United Kingdom Department of Physics Korea University Seoul 02841 Republic of Korea Department of Physics University of Tokyo Hongo 7-3-1 Bunkyo-ku 113-0033 Tokyo Japan Department of Physics University of York Heslington York YO10 5DD United Kingdom IRCNPC School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China Department of Physics University of Hong Kong Hong Kong Center for Nuclear Study (CNS) University of Tokyo Wako-shi Saitama 351-0198 Japan University of Oslo P. O. Box 1072 Blindern 0316 Oslo Norway CEA DAM DIF F-91297 Arpajon Cedex France PHC CNRS IN2P3 and University of Strasbourg F-67037 Strasbourg Cedex 2 France GSI Helmholtzzentrum für Schwerionenforschung GmbH 64291 Darmstadt Germany Rare Isotope Science Project Institute for Basic Science Daejeon 34047 Republic of Korea Department of Physics University of Notre Dame Notre Dame Indiana 46556 USA Research Center for Nuclear Physics (RCNP) Osaka University Ibaraki Osaka 567-0047 Japan 

出 版 物：《Physical Review C》 (物理学评论C辑：核物理学)

年 卷 期：2020年第101卷第4期

页      面：042801(R)-042801(R)页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：NRF-2016R1A5A1013277, (NRF-2013R1A1A2063017) Spanish Ministerio de Ciencia e Innovacin, (FPA2009-13377-C02, FPA2011-29854-C04) U.S. Department of Energy, USDOE Office of Science, SC National Nuclear Security Administration, NNSA, (89233218CNA000001) National Nuclear Security Administration, NNSA Nuclear Physics, NP Argonne National Laboratory, ANL, (17H06090, 25247045, DE-AC02-06CH11357) Argonne National Laboratory, ANL Laboratory Directed Research and Development, LDRD, (20190021DR) Laboratory Directed Research and Development, LDRD Los Alamos National Laboratory, LANL Science and Technology Facilities Council, STFC, (NRF-2009-0093817, NRF-2015R1D1A1A01056918) Science and Technology Facilities Council, STFC Hungarian Scientific Research Fund, OTKA, (K100835) Hungarian Scientific Research Fund, OTKA National Research Foundation of Korea, NRF, (2013M7A1A1075764) National Research Foundation of Korea, NRF Ministry of Education, Science and Technology, MEST RIKEN 

主　　题：Beta decay Lifetimes & widths Nucleosynthesis in explosive environments r process 150 ≤ A ≤ 189 90 ≤ A ≤ 149 Collective models Nuclear structure & decays Radiation detectors Radioactive beams Spectrometers & spectroscopic techniques 

摘      要：The β-decay half-lives of 55 neutron-rich nuclei Sn134−139, Sb134−142, Te137−144, I140−146, Xe142−148, Cs145−151, Ba148−153, and La151−155 were measured at the Radioactive Isotope Beam Factory employing the projectile fission fragments of U238. The nuclear level structure, which relates to deformation, has a large effect on the half-lives. The impact of newly measured half-lives on modeling the astrophysical origin of the heavy elements is studied in the context of r process nucleosynthesis. For a wide variety of astrophysical conditions, including those in which fission recycling occurs, the half-lives have an important local impact on the second (A ≈ 130) peak.