$$β$$-delayed-neutron studies of 135,136Sb and 140I performed with trapped ions
Abstract
In this work, Beta-delayed-neutron $(βn)$ spectroscopy was performed using the Beta-decay Paul Trap and an array of radiation detectors. The $βn$ branching ratios and energy spectra for 135,136Sb and 140I were obtained by measuring the time of flight of recoil ions emerging from the trapped ion cloud. These nuclei are located at the edge of an isotopic region identified as having $βn$ branching ratios that impact the $$r$$-process abundance pattern around the A ≈ 130 peak. For 135,136Sb and 140I, $βn$ branching ratios of 14.6(13)%, 17.6(29)%, and 7.6(28)% were determined, respectively. The $βn$ energy spectra obtained for 135Sb and 140I are compared with results from direct neutron measurements, and the $βn$ energy spectrum for 136Sb has been measured for the first time.
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- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States)
- Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States); Univ. of Chicago, IL (United States)
- Univ. of Notre Dame, IN (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States); Univ. of Maryland, College Park, MD (United States)
- Louisiana State Univ., Baton Rouge, LA (United States); Univ. of Notre Dame, IN (United States)
- Univ. of Manitoba, Winnipeg (Canada); Argonne National Lab. (ANL), Lemont, IL (United States)
- Univ. of California, Berkeley, CA (United States)
- Univ. of Notre Dame, IN (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
- McGill Univ., Montreal, QC (Canada); Argonne National Lab. (ANL), Lemont, IL (United States)
- Univ. of Manitoba, Winnipeg (Canada)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Maryland, College Park, MD (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP); Louisiana State Board of Regents; Natural Sciences and Engineering Research Council of Canada (NSERC); National Science Foundation (NSF); US Department of Homeland Security (DHS)
- OSTI Identifier:
- 1604280
- Alternate Identifier(s):
- OSTI ID: 1601707; OSTI ID: 1761509
- Report Number(s):
- LLNL-JRNL-760965
Journal ID: ISSN 2469-9985; PRVCAN; 949573; TRN: US2104204
- Grant/Contract Number:
- AC52-07NA27344; NA0000979; NA0002135; AC02-06CH11357; FG02-94ER40834; PHY-1419765
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 101; Journal Issue: 2; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; 42 ENGINEERING; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Beta decay; nuclear astrophysics; nuclear structure & decays; r process
Citation Formats
Wang, B. S., Caldwell, S. A., Scielzo, N. D., Czeszumska, A., Clark, J. A., Savard, G., Aprahamian, A., Burkey, M. T., Chiara, C. J., Harker, J., Levand, A. F., Marley, S. T., Morgan, G. E., Munson, J. M., Norman, E. B., Nystrom, A., Orford, R., Padgett, S. W., Pérez Galván, A., Sharma, K. S., Siegl, K., and Strauss, S. Y. $β$-delayed-neutron studies of 135,136Sb and 140I performed with trapped ions. United States: N. p., 2020.
Web. doi:10.1103/PhysRevC.101.025806.
Wang, B. S., Caldwell, S. A., Scielzo, N. D., Czeszumska, A., Clark, J. A., Savard, G., Aprahamian, A., Burkey, M. T., Chiara, C. J., Harker, J., Levand, A. F., Marley, S. T., Morgan, G. E., Munson, J. M., Norman, E. B., Nystrom, A., Orford, R., Padgett, S. W., Pérez Galván, A., Sharma, K. S., Siegl, K., & Strauss, S. Y. $β$-delayed-neutron studies of 135,136Sb and 140I performed with trapped ions. United States. https://doi.org/10.1103/PhysRevC.101.025806
Wang, B. S., Caldwell, S. A., Scielzo, N. D., Czeszumska, A., Clark, J. A., Savard, G., Aprahamian, A., Burkey, M. T., Chiara, C. J., Harker, J., Levand, A. F., Marley, S. T., Morgan, G. E., Munson, J. M., Norman, E. B., Nystrom, A., Orford, R., Padgett, S. W., Pérez Galván, A., Sharma, K. S., Siegl, K., and Strauss, S. Y. Mon .
"$β$-delayed-neutron studies of 135,136Sb and 140I performed with trapped ions". United States. https://doi.org/10.1103/PhysRevC.101.025806. https://www.osti.gov/servlets/purl/1604280.
@article{osti_1604280,
title = {$β$-delayed-neutron studies of 135,136Sb and 140I performed with trapped ions},
author = {Wang, B. S. and Caldwell, S. A. and Scielzo, N. D. and Czeszumska, A. and Clark, J. A. and Savard, G. and Aprahamian, A. and Burkey, M. T. and Chiara, C. J. and Harker, J. and Levand, A. F. and Marley, S. T. and Morgan, G. E. and Munson, J. M. and Norman, E. B. and Nystrom, A. and Orford, R. and Padgett, S. W. and Pérez Galván, A. and Sharma, K. S. and Siegl, K. and Strauss, S. Y.},
abstractNote = {In this work, Beta-delayed-neutron $(βn)$ spectroscopy was performed using the Beta-decay Paul Trap and an array of radiation detectors. The $βn$ branching ratios and energy spectra for 135,136Sb and 140I were obtained by measuring the time of flight of recoil ions emerging from the trapped ion cloud. These nuclei are located at the edge of an isotopic region identified as having $βn$ branching ratios that impact the $r$-process abundance pattern around the A ≈ 130 peak. For 135,136Sb and 140I, $βn$ branching ratios of 14.6(13)%, 17.6(29)%, and 7.6(28)% were determined, respectively. The $βn$ energy spectra obtained for 135Sb and 140I are compared with results from direct neutron measurements, and the $βn$ energy spectrum for 136Sb has been measured for the first time.},
doi = {10.1103/PhysRevC.101.025806},
journal = {Physical Review C},
number = 2,
volume = 101,
place = {United States},
year = {2020},
month = {2}
}
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