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Title: Isomer spectroscopy of neutron-rich $$^{165,167}$$Tb

Abstract

We present information on the excited states in the prolate-deformed, neutron-rich nuclei 165,167Tb100,102. The nuclei of interest were synthesised following in-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm 9Be target at the Radioactive Ion-Beam Factory (RIBF), RIKEN, Japan. The exotic nuclei were separated and identified event-by-event using the BigRIPS separator, with discrete energy gamma-ray decays from isomeric states with half-lives in the μs regime measured using the EURICA gamma-ray spectrometer. Metastable-state decays are identified in 165Tb and 167Tb and interpreted as arising from hindered E1 decay from the 72–[523] single quasi-proton Nilsson configuration to rotational states built on the 32–[411] single quasi-proton ground state. Lastly, these data correspond to the first spectroscopic information in the heaviest, odd-A terbium isotopes reported to date and provide information on proton Nilsson configurations which reside close to the Fermi surface as the 170Dy doubly-midshell nucleus is approached.

Authors:
 [1];  [2];  [3];  [4];  [1];  [1];  [3];  [1];  [3];  [5];  [3];  [3];  [6];  [7];  [8];  [1];  [9];  [9];  [10];  [11] more »;  [12];  [13];  [14];  [15];  [16];  [17];  [18];  [19];  [12];  [14];  [20];  [1];  [21];  [22];  [23];  [3];  [24];  [25];  [3];  [12];  [26];  [3];  [3];  [26];  [22];  [1];  [21];  [17];  [1];  [27];  [28];  [29];  [1];  [30];  [26];  [1];  [3];  [3];  [4];  [22];  [12];  [31] « less
+ Show Author Affiliations
  1. Univ. of Surrey, Guildford (United Kingdom)
  2. Univ. of Surrey, Guildford (United Kingdom); National Physical Lab., Teddington (United Kingdom)
  3. RIKEN Nishina Center, Saitama (Japan)
  4. Beihang Univ., Beijing (China)
  5. Univ. of Surrey, Guildford (United Kingdom); National Physical Lab., Teddington (United Kingdom); RIKEN Nishina Center, Saitama (Japan)
  6. Univ. of Hong Kong (Hong Kong); KU Leuven, Leuven (Belgium)
  7. RIKEN Nishina Center, Saitama (Japan); Univ. of Tokyo, Tokyo (Japan)
  8. RIKEN Nishina Center, Saitama (Japan); Tohoku Univ., Miyagi (Japan)
  9. Univ. of Brighton (United Kingdom)
  10. Australian National Univ., Canberra, ACT (Australia)
  11. Argonne National Lab. (ANL), Argonne, IL (United States)
  12. Osaka Univ., Toyonaka (Japan)
  13. RIKEN Nishina Center, Saitama (Japan); Peking Univ., Beijing (China)
  14. Xin Jiaotong Univ. (China)
  15. Peking Univ., Beijing (China)
  16. RIKEN Nishina Center, Saitama (Japan); Hungarian Academy of Sciences, Debrecen (Hungary)
  17. Chung-Ang Univ., Seoul (Republic of Korea)
  18. Univ. of Hong Kong (Hong Kong)
  19. RIKEN Nishina Center, Saitama (Japan); VNU Hanoi Univ. of Science, Hanoi (Vietnam)
  20. Almajmaah Univ. (Saudi Arabia)
  21. Sungkyunkwan Univ., Suwon (Korea)
  22. Hungarian Academy of Sciences, Debrecen (Hungary)
  23. KU Leuven, Leuven (Belgium); Univ. of Edinburgh, Edinburgh (United Kingdom)
  24. Univ. of Edinburgh, Edinburgh (United Kingdom)
  25. Osaka Univ., Toyonaka (Japan); Osaka Univ. Osaka (Japan)
  26. GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)
  27. Hosea Univ., Chungnam (Korea)
  28. Tohoku Univ., Miyagi (Japan)
  29. Univ. of Brighton (United Kingdom); Horia Hulubei National Institute of Physics and Engineering, Bucharest (Romania)
  30. Univ. College Dublin, Dublin (Ireland)
  31. Instituto Nazionale di Fisica Nucleare, Legnaro (Italy)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1364650
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Acta Physica Polonica. Series B
Additional Journal Information:
Journal Volume: 48; Journal Issue: 3; Journal ID: ISSN 0587-4254
Publisher:
Jagiellonian University
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Gurgi, L. A., Regan, P. H., Soderstrom, P. -A., Watanabe, H., Walker, P. M., Podolyak, Zs., Nishimura, S., Berry, T. A., Doornenbal, P., Lorusso, G., Isobe, T., Baba, H., Xu, Z. Y., Sakurai, H., Sumikama, T., Catford, W. N., Bruce, A. M., Browne, F., Lane, G. J., Kondev, F. G., Odahara, A., Wu, J., Liu, H. L., Xu, F. R., Korkulu, Z., Lee, P., Liu, J. J., Phong, V. H., Yagi, A., Zhang, G. X., Alharbi, T., Carroll, R. J., Chae, K. Y., Dombradi, Zs., Estrade, A., Fukuda, N., Griffin, C., Ideguchi, E., Inabe, N., Kanaoka, H., Kojouharov, I., Kubo, T., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lee, E. J., Lee, C. S., Lotay, G., Moon, C. B., Nishizuka, I., Nita, C. R., Patel, Z., Roberts, O. J., Schaffner, H., Shand, C. M., Suzuki, H., Takeda, H., Terashima, S., Vajta, Zs., Kanaya, S., and Valiente-Dobon, J. J. Isomer spectroscopy of neutron-rich $^{165,167}$Tb. United States: N. p., 2017. Web. doi:10.5506/APhysPolB.48.601.
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Gurgi, L. A., Regan, P. H., Soderstrom, P. -A., Watanabe, H., Walker, P. M., Podolyak, Zs., Nishimura, S., Berry, T. A., Doornenbal, P., Lorusso, G., Isobe, T., Baba, H., Xu, Z. Y., Sakurai, H., Sumikama, T., Catford, W. N., Bruce, A. M., Browne, F., Lane, G. J., Kondev, F. G., Odahara, A., Wu, J., Liu, H. L., Xu, F. R., Korkulu, Z., Lee, P., Liu, J. J., Phong, V. H., Yagi, A., Zhang, G. X., Alharbi, T., Carroll, R. J., Chae, K. Y., Dombradi, Zs., Estrade, A., Fukuda, N., Griffin, C., Ideguchi, E., Inabe, N., Kanaoka, H., Kojouharov, I., Kubo, T., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lee, E. J., Lee, C. S., Lotay, G., Moon, C. B., Nishizuka, I., Nita, C. R., Patel, Z., Roberts, O. J., Schaffner, H., Shand, C. M., Suzuki, H., Takeda, H., Terashima, S., Vajta, Zs., Kanaya, S., & Valiente-Dobon, J. J. Isomer spectroscopy of neutron-rich $^{165,167}$Tb. United States. https://doi.org/10.5506/APhysPolB.48.601
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Gurgi, L. A., Regan, P. H., Soderstrom, P. -A., Watanabe, H., Walker, P. M., Podolyak, Zs., Nishimura, S., Berry, T. A., Doornenbal, P., Lorusso, G., Isobe, T., Baba, H., Xu, Z. Y., Sakurai, H., Sumikama, T., Catford, W. N., Bruce, A. M., Browne, F., Lane, G. J., Kondev, F. G., Odahara, A., Wu, J., Liu, H. L., Xu, F. R., Korkulu, Z., Lee, P., Liu, J. J., Phong, V. H., Yagi, A., Zhang, G. X., Alharbi, T., Carroll, R. J., Chae, K. Y., Dombradi, Zs., Estrade, A., Fukuda, N., Griffin, C., Ideguchi, E., Inabe, N., Kanaoka, H., Kojouharov, I., Kubo, T., Kubono, S., Kurz, N., Kuti, I., Lalkovski, S., Lee, E. J., Lee, C. S., Lotay, G., Moon, C. B., Nishizuka, I., Nita, C. R., Patel, Z., Roberts, O. J., Schaffner, H., Shand, C. M., Suzuki, H., Takeda, H., Terashima, S., Vajta, Zs., Kanaya, S., and Valiente-Dobon, J. J. Sun . "Isomer spectroscopy of neutron-rich $^{165,167}$Tb". United States. https://doi.org/10.5506/APhysPolB.48.601. https://www.osti.gov/servlets/purl/1364650.
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@article{osti_1364650,
title = {Isomer spectroscopy of neutron-rich $^{165,167}$Tb},
author = {Gurgi, L. A. and Regan, P. H. and Soderstrom, P. -A. and Watanabe, H. and Walker, P. M. and Podolyak, Zs. and Nishimura, S. and Berry, T. A. and Doornenbal, P. and Lorusso, G. and Isobe, T. and Baba, H. and Xu, Z. Y. and Sakurai, H. and Sumikama, T. and Catford, W. N. and Bruce, A. M. and Browne, F. and Lane, G. J. and Kondev, F. G. and Odahara, A. and Wu, J. and Liu, H. L. and Xu, F. R. and Korkulu, Z. and Lee, P. and Liu, J. J. and Phong, V. H. and Yagi, A. and Zhang, G. X. and Alharbi, T. and Carroll, R. J. and Chae, K. Y. and Dombradi, Zs. and Estrade, A. and Fukuda, N. and Griffin, C. and Ideguchi, E. and Inabe, N. and Kanaoka, H. and Kojouharov, I. and Kubo, T. and Kubono, S. and Kurz, N. and Kuti, I. and Lalkovski, S. and Lee, E. J. and Lee, C. S. and Lotay, G. and Moon, C. B. and Nishizuka, I. and Nita, C. R. and Patel, Z. and Roberts, O. J. and Schaffner, H. and Shand, C. M. and Suzuki, H. and Takeda, H. and Terashima, S. and Vajta, Zs. and Kanaya, S. and Valiente-Dobon, J. J.},
abstractNote = {We present information on the excited states in the prolate-deformed, neutron-rich nuclei 165,167Tb100,102. The nuclei of interest were synthesised following in-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm 9Be target at the Radioactive Ion-Beam Factory (RIBF), RIKEN, Japan. The exotic nuclei were separated and identified event-by-event using the BigRIPS separator, with discrete energy gamma-ray decays from isomeric states with half-lives in the μs regime measured using the EURICA gamma-ray spectrometer. Metastable-state decays are identified in 165Tb and 167Tb and interpreted as arising from hindered E1 decay from the 72–[523] single quasi-proton Nilsson configuration to rotational states built on the 32–[411] single quasi-proton ground state. Lastly, these data correspond to the first spectroscopic information in the heaviest, odd-A terbium isotopes reported to date and provide information on proton Nilsson configurations which reside close to the Fermi surface as the 170Dy doubly-midshell nucleus is approached.},
doi = {10.5506/APhysPolB.48.601},
journal = {Acta Physica Polonica. Series B},
number = 3,
volume = 48,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2017},
month = {Sun Jan 01 00:00:00 EST 2017}
}
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https://doi.org/10.5506/APhysPolB.48.601
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