β decay of Ba141

Rufino, Jr., Javier; McCutchan, E. A.; Zhu, S.; Sonzogni, A. A.; Alcorta, M.; Bertone, P. F.; Carpenter, Michael P.; Clark, J.; Hoffman, C. R.; Janssens, Robert V. F.; Kondev, Filip G.; Lauritsen, T.; Lister, Christopher J.; Pardo, R.; Rogers, Andrew M.; Savard, G.; Seweryniak, D.; Vondrasek, R.

doi:10.1103/physrevc.106.034318

β decay of Ba 141

Journal Article · Thu Sep 22 00:00:00 EDT 2022 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.106.034318· OSTI ID:1895053

^[1]; McCutchan, E. A. ^[2]; Zhu, S. ^[3]; Sonzogni, A. A. ^[2]; Alcorta, M. ^[4]; Bertone, P. F. ^[4]; ^[4]; Clark, J. ^[4]; Hoffman, C. R. ^[4]; ^[5]; ^[4]; Lauritsen, T. ^[4]; ^[4]; Pardo, R. ^[4]; ^[4]; Savard, G. ^[4]; Seweryniak, D. ^[4]; Vondrasek, R. ^[4]

Univ. of Texas at San Antonio, TX (United States); Brookhaven National Lab. (BNL), Upton, NY (United States). National Nuclear Data Center (NNDC)
Brookhaven National Lab. (BNL), Upton, NY (United States). National Nuclear Data Center (NNDC)
Brookhaven National Lab. (BNL), Upton, NY (United States). National Nuclear Data Center (NNDC); Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)

The β-decay strength function of nuclides produced in fission is important as it dictates the distribution of decay energy between electrons, neutrinos, and γ rays and so is critical for calculating decay heat in reactors and for estimating the reactor antineutrino spectrum. Several experimental techniques are available to determine this strength function, including electron spectroscopy, γ-ray calorimetry (TAGS spectroscopy), and detailed, high-resolution spectroscopy with modern large high-purity germanium arrays. This work investigates the decay of the well-known and strongly produced fission fragment ¹⁴¹Ba. A beam of ¹⁴¹Cs was implanted at the target position of the Gammasphere and the subsequent decay of the daughter ¹⁴¹Ba was studied. Extensive decay spectroscopy was possible up to the decay Q value of 3.197(7) MeV, including a significant extension of the level scheme and detailed angular correlation measurements for all levels with greater than 0.25% β feeding. The distribution of the β-decay strength was then inferred and compared to previous calorimetric studies. In conclusion, the agreement was excellent and provides a benchmark for comparing strength function methods and data for a more detailed understanding of the structure of ¹⁴¹La.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS)

Grant/Contract Number:: AC02-06CH11357; AC02-98CH10886; FG02-97ER41033; FG02-97ER41041; SC0012704

OSTI ID:: 1895053

Report Number(s):: BNL-223596-2022-JAAM

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 3 Vol. 106; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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