-Decay Half-Lives of Neutron-Rich to : Experimental Feedback and Evaluation of the -Process Rare-Earth Peak Formation
Abstract
The β-decay half-lives of 94 neutron-rich nuclei 144 $$-$$ 151Cs, 146 $$-$$ 154Ba, 148 $$-$$ 156La, 150 $$-$$ 158Ce, 153 $$-$$160Pr, 156 $$-$$ 162 Nd, 159 $$-$$ 163Pm, 160 $$-$$ 166Sm, 161 $$-$$ 168Eu , 165 $$-$$ 170Gd, 166 $$-$$ 172Tb, 169 $$-$$ 173Dy, 172 $$-$$ 175Ho, and two isomeric states 174 mEr, 172 mDy were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops of β -decay half-lives are observed at neutron-number N = 97 for 58Ce, 59Pr, 60Nd , and 62Sm, and N = 105 for 63Eu, 64Gd, 65Tb, and 66Dy. Features in the data mirror the interplay between pairing effects and microscopic structure. In conclusion, $$r$$-process network calculations performed for a range of mass models and astrophysical conditions show that the 57 half-lives measured for the first time play an important role in shaping the abundance pattern of rare-earth elements in the solar system.
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- Peking Univ., Beijing (China). School of Physics, State Key Lab. of Nuclear Physics; RIKEN, Saitama (Japan). Nishina Center
- RIKEN, Saitama (Japan). Nishina Center
- RIKEN, Saitama (Japan). Nishina Center; National Physical Lab. (NPL), Teddington, Middlesex (United Kingdom); Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Osaka Univ. (Japan). Research Center for Nuclear Physics (RCNP)
- National Physical Lab. (NPL), Teddington, Middlesex (United Kingdom); Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
- Univ. Joseph Fourier Grenoble (France). Inst. National Polytechnique de Grenoble, Lab. de Physique Subatomique & Cosmologie (LPSC); Univ. of the West of Scotland, Paisley (United Kingdom). School of Engineering; Univ. of Glasgow, Scotland (United Kingdom)
- Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
- Beihang Univ., Beijing (China). School of Physics and Nuclear Energy Engineering; RIKEN, Saitama (Japan). Nishina Center
- Univ. of Hong Kong (China). Dept. of Physics; Univ. of Tokyo (Japan). Dept. of Physics
- Univ. of Brighton (United Kingdom). School of Computing, Engineering and Mathematics; RIKEN, Saitama (Japan). Nishina Center
- Osaka Univ. (Japan). Dept. of Physics
- Univ. Joseph Fourier Grenoble (France). Inst. National Polytechnique de Grenoble, Lab. de Physique Subatomique & Cosmologie (LPSC); Inst. Laue-Langevin (ILL), Grenoble (France); RIKEN, Saitama (Japan). Nishina Center
- Chung-Ang Univ., Seoul (Korea, Republic of). Dept. of Physics
- Univ. of Hong Kong (China). Dept. of Physics
- Peking Univ., Beijing (China). School of Physics, State Key Lab. of Nuclear Physics
- Hungarian Academy of Sciences, Debrecen (Hungary). Inst. for Nuclear Research
- Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics; RIKEN, Saitama (Japan). Nishina Center
- Vietnam National Univ., Hanoi (Vietnam). Hanoi Univ. of Science, Faculty of Physics; RIKEN, Saitama (Japan). Nishina Center
- RIKEN, Saitama (Japan). Nishina Center; Univ. of Tokyo (Japan). Dept. of Physics
- Univ. of York (United Kingdom). Dept. of Physics; RIKEN, Saitama (Japan). Nishina Center
- Univ. of Tokyo, Wako-shi (Japan). Center for Nuclear Study (CNS)
- Beihang Univ., Beijing (China). School of Physics and Nuclear Energy Engineering
- Almajmaah Univ. (Saudi Arabia). College of Science in Zulfi, Dept. of Physics
- Univ. of Oslo (Norway)
- Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
- Univ. of Brighton (United Kingdom). School of Computing, Engineering and Mathematics
- Sungkyunkwan Univ., Suwon (Republic of Korea). Dept. of Physics
- Univ. of Edinburgh, Scotland (United Kingdom). School of Physics and Astronomy
- Univ. degli Studi di Padova (Italy). Dipartimento di Fisica; National Inst. of Nuclear Physics (INFN), Legnaro (Italy). National Lab. of Legnaro (INFN-LNL)
- GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
- Argonne National Lab. (ANL), Argonne, IL (United States). Nuclear Engineering Division
- Australian National Univ., Canberra, ACT (Australia). Research School of Physical Sciences and Engineering, Dept. of Nuclear Physics
- Hoseo Univ., Asan (Korea)
- Tohoku Univ., Sendai (Japan). Dept. of Physics
- Univ. of Brighton (United Kingdom). School of Computing, Engineering and Mathematics; Horia Hulubei National Inst. of Physics and Nuclear Engineering, Bucharest (Romania)
- Univ. College Dublin (Ireland). School of Physics
- Univ. Autonoma de Madrid (Spain). Dept. de Fisica Teorica; Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain). Inst. de Estructura de la Materia
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP); National Research Foundation of Korea (NRF); Ministry of Education, Science, and Technology (MEST) of Korea; UK Science and Technology Facilities Council
- OSTI Identifier:
- 1351228
- Alternate Identifier(s):
- OSTI ID: 1344138
- Report Number(s):
- LA-UR-16-27574
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1700710
- Grant/Contract Number:
- AC52-06NA25396; AC02-06CH11357; K100835; NNX10AH78G; NRF-2013R1A1A2063017; NRF-2016 R1A5A1013277; NRF-2015R1D1A1A01056918; NRF-2009-0093817; 25247045; FPA2009-13377-C02; FPA2011-29854-C04; DEAC52-06NA25396
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 118; Journal Issue: 7; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTRONOMY AND ASTROPHYSICS; Atomic and Nuclear Physics; Astronomy and Astrophysics; Beta Decay Half-Lives
Citation Formats
Wu, J., Nishimura, S., Lorusso, G., Möller, Peter, Ideguchi, E., Regan, P. -H., Simpson, G. S., Söderström, P. -A., Walker, P. M., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Daido, R., Doornenbal, P., Fang, Y. F., Gey, G., Isobe, T., Lee, P. S., Liu, J. J., Li, Z., Korkulu, Z., Patel, Z., Phong, V., Rice, S., Sakurai, H., Sinclair, L., Sumikama, T., Tanaka, M., Yagi, A., Ye, Y. L., Yokoyama, R., Zhang, G. X., Alharbi, T., Aoi, N., Bello Garrote, F. L., Benzoni, G., Bruce, A. M., Carroll, R. J., Chae, K. Y., Dombradi, Z., Estrade, A., Gottardo, A., Griffin, C. J., Kanaoka, H., Kojouharov, I., Kondev, F. G., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lane, G. J., Lee, E. J., Lokotko, T., Lotay, G., Moon, C. -B., Nishibata, H., Nishizuka, I., Nita, C. R., Odahara, A., Podolyák, Zs., Roberts, O. J., Schaffner, H., Shand, C., Taprogge, J., Terashima, S., Vajta, Z., and Yoshida, S. 94β -Decay Half-Lives of Neutron-Rich Cs55 to Ho67 : Experimental Feedback and Evaluation of the r -Process Rare-Earth Peak Formation. United States: N. p., 2017.
Web. doi:10.1103/PhysRevLett.118.072701.
Wu, J., Nishimura, S., Lorusso, G., Möller, Peter, Ideguchi, E., Regan, P. -H., Simpson, G. S., Söderström, P. -A., Walker, P. M., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Daido, R., Doornenbal, P., Fang, Y. F., Gey, G., Isobe, T., Lee, P. S., Liu, J. J., Li, Z., Korkulu, Z., Patel, Z., Phong, V., Rice, S., Sakurai, H., Sinclair, L., Sumikama, T., Tanaka, M., Yagi, A., Ye, Y. L., Yokoyama, R., Zhang, G. X., Alharbi, T., Aoi, N., Bello Garrote, F. L., Benzoni, G., Bruce, A. M., Carroll, R. J., Chae, K. Y., Dombradi, Z., Estrade, A., Gottardo, A., Griffin, C. J., Kanaoka, H., Kojouharov, I., Kondev, F. G., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lane, G. J., Lee, E. J., Lokotko, T., Lotay, G., Moon, C. -B., Nishibata, H., Nishizuka, I., Nita, C. R., Odahara, A., Podolyák, Zs., Roberts, O. J., Schaffner, H., Shand, C., Taprogge, J., Terashima, S., Vajta, Z., & Yoshida, S. 94β -Decay Half-Lives of Neutron-Rich Cs55 to Ho67 : Experimental Feedback and Evaluation of the r -Process Rare-Earth Peak Formation. United States. https://doi.org/10.1103/PhysRevLett.118.072701
Wu, J., Nishimura, S., Lorusso, G., Möller, Peter, Ideguchi, E., Regan, P. -H., Simpson, G. S., Söderström, P. -A., Walker, P. M., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Daido, R., Doornenbal, P., Fang, Y. F., Gey, G., Isobe, T., Lee, P. S., Liu, J. J., Li, Z., Korkulu, Z., Patel, Z., Phong, V., Rice, S., Sakurai, H., Sinclair, L., Sumikama, T., Tanaka, M., Yagi, A., Ye, Y. L., Yokoyama, R., Zhang, G. X., Alharbi, T., Aoi, N., Bello Garrote, F. L., Benzoni, G., Bruce, A. M., Carroll, R. J., Chae, K. Y., Dombradi, Z., Estrade, A., Gottardo, A., Griffin, C. J., Kanaoka, H., Kojouharov, I., Kondev, F. G., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lane, G. J., Lee, E. J., Lokotko, T., Lotay, G., Moon, C. -B., Nishibata, H., Nishizuka, I., Nita, C. R., Odahara, A., Podolyák, Zs., Roberts, O. J., Schaffner, H., Shand, C., Taprogge, J., Terashima, S., Vajta, Z., and Yoshida, S. 2017.
"94β -Decay Half-Lives of Neutron-Rich Cs55 to Ho67 : Experimental Feedback and Evaluation of the r -Process Rare-Earth Peak Formation". United States. https://doi.org/10.1103/PhysRevLett.118.072701. https://www.osti.gov/servlets/purl/1351228.
@article{osti_1351228,
title = {94β -Decay Half-Lives of Neutron-Rich Cs55 to Ho67 : Experimental Feedback and Evaluation of the r -Process Rare-Earth Peak Formation},
author = {Wu, J. and Nishimura, S. and Lorusso, G. and Möller, Peter and Ideguchi, E. and Regan, P. -H. and Simpson, G. S. and Söderström, P. -A. and Walker, P. M. and Watanabe, H. and Xu, Z. Y. and Baba, H. and Browne, F. and Daido, R. and Doornenbal, P. and Fang, Y. F. and Gey, G. and Isobe, T. and Lee, P. S. and Liu, J. J. and Li, Z. and Korkulu, Z. and Patel, Z. and Phong, V. and Rice, S. and Sakurai, H. and Sinclair, L. and Sumikama, T. and Tanaka, M. and Yagi, A. and Ye, Y. L. and Yokoyama, R. and Zhang, G. X. and Alharbi, T. and Aoi, N. and Bello Garrote, F. L. and Benzoni, G. and Bruce, A. M. and Carroll, R. J. and Chae, K. Y. and Dombradi, Z. and Estrade, A. and Gottardo, A. and Griffin, C. J. and Kanaoka, H. and Kojouharov, I. and Kondev, F. G. and Kubono, S. and Kurz, N. and Kuti, I. and Lalkovski, S. and Lane, G. J. and Lee, E. J. and Lokotko, T. and Lotay, G. and Moon, C. -B. and Nishibata, H. and Nishizuka, I. and Nita, C. R. and Odahara, A. and Podolyák, Zs. and Roberts, O. J. and Schaffner, H. and Shand, C. and Taprogge, J. and Terashima, S. and Vajta, Z. and Yoshida, S.},
abstractNote = {The β-decay half-lives of 94 neutron-rich nuclei 144 $-$ 151Cs, 146 $-$ 154Ba, 148 $-$ 156La, 150 $-$ 158Ce, 153 $-$160Pr, 156 $-$ 162 Nd, 159 $-$ 163Pm, 160 $-$ 166Sm, 161 $-$ 168Eu , 165 $-$ 170Gd, 166 $-$ 172Tb, 169 $-$ 173Dy, 172 $-$ 175Ho, and two isomeric states 174 mEr, 172 mDy were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops of β -decay half-lives are observed at neutron-number N = 97 for 58Ce, 59Pr, 60Nd , and 62Sm, and N = 105 for 63Eu, 64Gd, 65Tb, and 66Dy. Features in the data mirror the interplay between pairing effects and microscopic structure. In conclusion, $r$-process network calculations performed for a range of mass models and astrophysical conditions show that the 57 half-lives measured for the first time play an important role in shaping the abundance pattern of rare-earth elements in the solar system.},
doi = {10.1103/PhysRevLett.118.072701},
url = {https://www.osti.gov/biblio/1351228},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 7,
volume = 118,
place = {United States},
year = {Thu Feb 16 00:00:00 EST 2017},
month = {Thu Feb 16 00:00:00 EST 2017}
}
Web of Science
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