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Title: β-decay half-lives of 134,134mSb and their isomeric yield ratio produced by the spontaneous fission of 252Cf

Abstract

A number of fission products possess isomeric states which have a nuclear spin significantly different from that of the ground state. The yield ratio of these states following fission is influenced by the angular momentum present in the fissioning system. The 134m,134Sb yield ratio had not been previously measured in the spontaneous fission of 252Cf; however, it had previously been observed to favor the (7 -) isomer over the (0 -) ground state in 235U (n th,f) and 232Th(25 MeV p,f). Using a mass-separated beam of low-energy 134m,134Sb ions produced by 252Cf spontaneous fission at the CARIBU facility, β particles and γ rays were detected using the SATURN/X-Array decay station to determine the fission-yield ratio and β-decay half-lives. the 134mSb to 134Sb yield was determined to be 2.03±0.05 and the half-lives of 134mSb and 134Sb were found to be 9.87±0.08 s and 0.674±0.004 s, respectively. These results represent the rst isomeric yield ratio measurement for this nucleus, and improved measurements of the 134Sb ground-state and the 134mSb isomer half-lives.

Authors:
 [1];  [2];  [2];  [3];  [4];  [4];  [5];  [6];  [5];  [6];  [7];  [6];  [8];  [9];  [10];  [5];  [7];  [5]
  1. Univ. of Notre Dame, IN (United States). Dept. of Physics; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
  3. Univ. of Notre Dame, IN (United States). Dept. of Physics
  4. Univ. of Chicago, IL (United States). Dept. of Physics; Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  5. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  6. Univ. of Massachusetts, Lowell, MA (United States). Dept. of Physics and Applied Physics
  7. Australian National Univ., Canberra, ACT (Australia). Research School of Physics and Engineering, Dept. of Nuclear Physics
  8. Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy
  9. Brookhaven National Lab. (BNL), Upton, NY (United States). National Nuclear Data Center
  10. Australian National Univ., Canberra, ACT (Australia). Research School of Physics and Engineering, Dept. of Nuclear Physics; Univ. of Massachusetts, Lowell, MA (United States). Dept. of Physics and Applied Physics
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1480924
Alternate Identifier(s):
OSTI ID: 1482145
Report Number(s):
BNL-209417-2018-JAAM
Journal ID: ISSN 2469-9985
Grant/Contract Number:  
SC0012704; NA0000979; AC52-07NA27344; AC02-06CH11357; FG02-94ER40848; AC02-98CH10886
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 98; Journal Issue: 5; Journal ID: ISSN 2469-9985
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Siegl, K., Kolos, K., Scielzo, N. D., Aprahamian, A., Savard, G., Burkey, M. T., Carpenter, M. P., Chowdhury, P., Clark, J. A., Copp, P., Lane, G., Lister, C. J., Marley, S. T., McCutchan, Elizabeth A., Mitchell, A. J., Rohrer, J., Smith, M. L., and Zhu, S.. β-decay half-lives of 134,134mSb and their isomeric yield ratio produced by the spontaneous fission of 252Cf. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.98.054307.
Siegl, K., Kolos, K., Scielzo, N. D., Aprahamian, A., Savard, G., Burkey, M. T., Carpenter, M. P., Chowdhury, P., Clark, J. A., Copp, P., Lane, G., Lister, C. J., Marley, S. T., McCutchan, Elizabeth A., Mitchell, A. J., Rohrer, J., Smith, M. L., & Zhu, S.. β-decay half-lives of 134,134mSb and their isomeric yield ratio produced by the spontaneous fission of 252Cf. United States. doi:10.1103/PhysRevC.98.054307.
Siegl, K., Kolos, K., Scielzo, N. D., Aprahamian, A., Savard, G., Burkey, M. T., Carpenter, M. P., Chowdhury, P., Clark, J. A., Copp, P., Lane, G., Lister, C. J., Marley, S. T., McCutchan, Elizabeth A., Mitchell, A. J., Rohrer, J., Smith, M. L., and Zhu, S.. Wed . "β-decay half-lives of 134,134mSb and their isomeric yield ratio produced by the spontaneous fission of 252Cf". United States. doi:10.1103/PhysRevC.98.054307.
@article{osti_1480924,
title = {β-decay half-lives of 134,134mSb and their isomeric yield ratio produced by the spontaneous fission of 252Cf},
author = {Siegl, K. and Kolos, K. and Scielzo, N. D. and Aprahamian, A. and Savard, G. and Burkey, M. T. and Carpenter, M. P. and Chowdhury, P. and Clark, J. A. and Copp, P. and Lane, G. and Lister, C. J. and Marley, S. T. and McCutchan, Elizabeth A. and Mitchell, A. J. and Rohrer, J. and Smith, M. L. and Zhu, S.},
abstractNote = {A number of fission products possess isomeric states which have a nuclear spin significantly different from that of the ground state. The yield ratio of these states following fission is influenced by the angular momentum present in the fissioning system. The 134m,134Sb yield ratio had not been previously measured in the spontaneous fission of 252Cf; however, it had previously been observed to favor the (7-) isomer over the (0-) ground state in 235U (nth,f) and 232Th(25 MeV p,f). Using a mass-separated beam of low-energy 134m,134Sb ions produced by 252Cf spontaneous fission at the CARIBU facility, β particles and γ rays were detected using the SATURN/X-Array decay station to determine the fission-yield ratio and β-decay half-lives. the 134mSb to 134Sb yield was determined to be 2.03±0.05 and the half-lives of 134mSb and 134Sb were found to be 9.87±0.08 s and 0.674±0.004 s, respectively. These results represent the rst isomeric yield ratio measurement for this nucleus, and improved measurements of the 134Sb ground-state and the 134mSb isomer half-lives.},
doi = {10.1103/PhysRevC.98.054307},
journal = {Physical Review C},
number = 5,
volume = 98,
place = {United States},
year = {Wed Nov 14 00:00:00 EST 2018},
month = {Wed Nov 14 00:00:00 EST 2018}
}

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