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Title: β-decay of neutron-rich Z∼60 nuclei and the origin of rare earth elements

Abstract

A large fraction of the rare-earth elements observed in the solar system is produced in the astrophysical rapid neutron capture process (r-process). However, current stellar models cannot completely explain the relative abundance of these elements partially because of nuclear physics uncertainties. To address this problem, a β-decay spectroscopy experiment was performed at RI Beam Factory (RIBF) at RIKEN, aimed at studying a wide range of very neutron-rich nuclei with Z∼60 that are progenitors of the rare-earth elements with mass number A∼460. The experiment provides a test of nuclear models as well as experimental inputs for r-process calculations. This contribution presents the experimental setup and some preliminary results of the experiment.

Authors:
 [1]; ; ; ; ; ; ;  [2];  [3];  [4]; ; ; ; ; ;  [5]; ; ;  [6];
  1. RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan and School of Physics and State key Laboratory of Nuclear Physics and Technology, Peking University (China)
  2. RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198 (Japan)
  3. Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113-0033 Tokyo (Japan)
  4. School of Computing Engineering and Mathematics, University of Brighton (United Kingdom)
  5. Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka (Japan)
  6. Research Center for Nuclear Physics, Osaka University (Japan)
Publication Date:
OSTI Identifier:
22280491
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1594; Journal Issue: 1; Conference: OMEG12: 12. international symposium on origin of matter and evolution of galaxies, Tsukuba (Japan), 18-21 Nov 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASTROPHYSICS; BETA DECAY; BETA SPECTROSCOPY; CAPTURE; ELEMENT ABUNDANCE; GAMMA SPECTROSCOPY; INTERMEDIATE MASS NUCLEI; JAPANESE ORGANIZATIONS; NEUTRON REACTIONS; NEUTRON-RICH ISOTOPES; NUCLEAR MODELS; R PROCESS; RADIOACTIVE ION BEAMS; RARE EARTHS; SOLAR SYSTEM

Citation Formats

Wu, J., Nishimura, S., Lorusso, G., Baba, H., Doornenbal, P., Isobe, T., Söderström, P. A., Sakurai, H., Xu, Z. Y., Browne, F., Daido, R., Fang, Y. F., Yagi, A., Nishibata, H., Odahara, A., Yamamoto, T., Ideguchi, E., Aoi, N., Tanaka, M., Collaboration: EURICA Collaboration, and others, and. β-decay of neutron-rich Z∼60 nuclei and the origin of rare earth elements. United States: N. p., 2014. Web. doi:10.1063/1.4874099.
Wu, J., Nishimura, S., Lorusso, G., Baba, H., Doornenbal, P., Isobe, T., Söderström, P. A., Sakurai, H., Xu, Z. Y., Browne, F., Daido, R., Fang, Y. F., Yagi, A., Nishibata, H., Odahara, A., Yamamoto, T., Ideguchi, E., Aoi, N., Tanaka, M., Collaboration: EURICA Collaboration, & others, and. β-decay of neutron-rich Z∼60 nuclei and the origin of rare earth elements. United States. https://doi.org/10.1063/1.4874099
Wu, J., Nishimura, S., Lorusso, G., Baba, H., Doornenbal, P., Isobe, T., Söderström, P. A., Sakurai, H., Xu, Z. Y., Browne, F., Daido, R., Fang, Y. F., Yagi, A., Nishibata, H., Odahara, A., Yamamoto, T., Ideguchi, E., Aoi, N., Tanaka, M., Collaboration: EURICA Collaboration, and others, and. 2014. "β-decay of neutron-rich Z∼60 nuclei and the origin of rare earth elements". United States. https://doi.org/10.1063/1.4874099.
@article{osti_22280491,
title = {β-decay of neutron-rich Z∼60 nuclei and the origin of rare earth elements},
author = {Wu, J. and Nishimura, S. and Lorusso, G. and Baba, H. and Doornenbal, P. and Isobe, T. and Söderström, P. A. and Sakurai, H. and Xu, Z. Y. and Browne, F. and Daido, R. and Fang, Y. F. and Yagi, A. and Nishibata, H. and Odahara, A. and Yamamoto, T. and Ideguchi, E. and Aoi, N. and Tanaka, M. and Collaboration: EURICA Collaboration and others, and},
abstractNote = {A large fraction of the rare-earth elements observed in the solar system is produced in the astrophysical rapid neutron capture process (r-process). However, current stellar models cannot completely explain the relative abundance of these elements partially because of nuclear physics uncertainties. To address this problem, a β-decay spectroscopy experiment was performed at RI Beam Factory (RIBF) at RIKEN, aimed at studying a wide range of very neutron-rich nuclei with Z∼60 that are progenitors of the rare-earth elements with mass number A∼460. The experiment provides a test of nuclear models as well as experimental inputs for r-process calculations. This contribution presents the experimental setup and some preliminary results of the experiment.},
doi = {10.1063/1.4874099},
url = {https://www.osti.gov/biblio/22280491}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1594,
place = {United States},
year = {Fri May 02 00:00:00 EDT 2014},
month = {Fri May 02 00:00:00 EDT 2014}
}