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Title: Observation of a $μs$ isomer in $${134\atop{49}}$$In$$_{85}$$: Proton-neutron coupling "southeast" of $${132\atop{50}}$$Sn$$_{82}$$

Journal Article · · Physical Review C
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  1. RIKEN, Wako-shi, Saitama (Japan). RIKEN Nishina Center; VNU Univ. of Science, Thanh Xuan, Hanoi (Vietnam). Faculty of Phsyics
  2. RIKEN, Wako-shi, Saitama (Japan). RIKEN Nishina Center; National Physical Lab., Teddington (United Kingdom). Chemical Medical and Environmental Science Division; Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
  3. Univ. of Edinburgh, Edinburgh (United Kingdom). School of Physics and Astronomy
  4. Center Michigan Univ., Mount Pleasant, MI (United States). Dept. of Physics and Science of Advanced Materials Program
  5. RIKEN, Wako-shi, Saitama (Japan). RIKEN Nishina Center; Univ. of Hong Kong, Pokfulam Road (Hong Kong). Dept. of Physics
  6. RIKEN, Wako-shi, Saitama (Japan). RIKEN Nishina Center; Univ. of Tokyo, Bunkyo-ku, Tokyo (Japan). Dept. of Physics
  7. National Superconducting Cyclotron Lab., East Lansing, MI (United States)
  8. RIKEN, Wako-shi, Saitama (Japan). RIKEN Nishina Center
  9. National Physical Lab., Teddington (United Kingdom). Chemical Medical and Environmental Science Division
  10. National Physical Lab., Teddington (United Kingdom). Chemical Medical and Environmental Science Division; Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
  11. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  12. Inst. de Física Corpuscular, Valencia (Spain)
  13. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
  14. Inst. de Física Corpuscular, Valencia (Spain); MTA ATOMKI, Debrecen (Hungary). Inst. of Nuclear Research
  15. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
  16. TRIUMF, Vancouver, British Columbia (Canada)
  17. Univ. Politécnica de Catalunya (UPC), Barcelona (Spain). INTE-ETSEIB
  18. Univ. of Warsaw, Warsaw (Poland). Heavy Ion Lab.
  19. TRIUMF, Vancouver, British Columbia (Canada); Univ. of Victoria, Victoria (Canada). Dept. of Physics and Astronomy
  20. Complesso Univ. di Monte S. Angelo, Napoli (Italy). Inst. Nazionale di Fisica Nucleare
  21. Univ. of Liverpool, Liverpool (United Kingdom). Dept. of Physics
  22. Inst. de Estructura de la Materia, Madrid (Spain)
  23. Vietnam Academy of Science and Technology, Ba Dinh, Hanoi (Vietnam). Inst. of Physics and Graduate Univ. of Science and Technology
  24. RIKEN, Wako-shi, Saitama (Japan). RIKEN Nishina Center; MTA ATOMKI, Debrecen (Hungary). Inst. of Nuclear Research
  25. Univ. of Warsaw, Warsaw (Poland). Faculty of Physics
  26. Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
  27. Inst. de Física Corpuscular, Valencia (Spain); Univ. Politécnica de Catalunya (UPC), Barcelona (Spain). INTE-ETSEIB
  28. Sun Yat-Sen Univ., Zhuhai, Guangdong (China). Sino-French Inst. of Nuclear Engineering and Technology
+ Show Author Affiliations

In this paper, we report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particle nucleus 134In. The nuclei of interest were produced by in-flight fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. The isomer depopulates through a γ ray of energy 56.7(1) keV and with a half-life of $$T_{1/2}$$ = 3.5 (4) $μs$. Based on the comparison with shell-model calculations, we interpret the isomer as the $I^π$ = 5-member of the $$π0g{-1\atop{9/2}}Ⓧv1f{3\atop{7/2}}$$ multiplet, decaying to the $I^π$ = 7- ground state with a reduced-transition probability of $B (E$2; 5- $$\rightarrow$$ 7- = 0.53 (6) W. u. Observation of this isomer, and lack of evidence in the current work for a $I^π$ = 5- isomer decay in 132In, provides a benchmark of the proton-neutron interaction in the region of the nuclear chart “southeast” of 132Sn, where experimental information on excited states is sparse.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC05-00OR22725; FG02-96ER40983; NA0002132
OSTI ID:
1569363
Alternate ID(s):
OSTI ID: 1545452
Journal Information:
Physical Review C, Vol. 100, Issue 1; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (22)

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Figures / Tables (5)

FIG. 1(p. 2)figure FIG. 1
FIG. 2(p. 2)figure FIG. 2
FIG. 3(p. 3)figure FIG. 3
TABLE I(p. 3)table TABLE I
FIG. 4(p. 5)figure FIG. 4

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