$β$-delayed neutron emission studies of 137,138I and 144,145Cs performed with trapped ions

Czeszumska, A.; Scielzo, N. D.; Caldwell, S. A.; Clark, J. A.; Savard, G.; Wang, B. S.; Aprahamian, A.; Burkey, M. T.; Chiara, C. J.; Harker, J.; Levand, A. F.; Marley, S. T.; Morgan, G.; Munson, J. M.; Norman, E. B.; Nystrom, A.; Orford, R.; Padgett, S. W.; Pérez Galván, A.; Sharma, K. S.; Siegl, K.; Strauss, S. Y.

doi:10.1103/physrevc.101.024312

Title: $$β$$-delayed neutron emission studies of ^137,138I and ^144,145Cs performed with trapped ions

Journal Article · 26 February 2020 · Physical Review C

DOI: https://doi.org/10.1103/physrevc.101.024312 · OSTI ID:1602426

; Scielzo, N. D.; Caldwell, S. A.; Clark, J. A.; Savard, G.; Wang, B. S.; Aprahamian, A.; Burkey, M. T.; Chiara, C. J.; Harker, J.; Levand, A. F.; Marley, S. T.; Morgan, G.; Munson, J. M.; Norman, E. B.; Nystrom, A.; Orford, R.; Padgett, S. W.; Pérez Galván, A.; Sharma, K. S. more »

A detailed study of the β-delayed neutron emission properties of ^137,138I and ^144,145Cs has been performed by confining ions in the Beta-decay Paul Trap. The daughter ions following β decay emerge from the trapped-ion cloud with negligible scattering allowing reconstruction of the recoil-ion energy from the time of flight. From this information, the neutron-emission branching ratios and neutron-energy spectra were deduced. The results for the ¹³⁷I and ^144,145Cs decays are in agreement with previous results performed using direct neutron-detection techniques. In the case of ¹³⁸I, a branching ratio of 6.18(50)% is obtained, yielding a value consistent with the more recent results, which are a factor of two larger than measurements made prior to 1978.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: National Science Foundation (NSF); US Department of Homeland Security (DHS); USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0000979; AC52-07NA27344; NA0002135; AC02-06CH11357; FG02-94ER40834

OSTI ID:: 1602426

Alternate ID(s):: OSTI ID: 1601700; OSTI ID: 1651191

Report Number(s):: LLNL-JRNL-813968; 1022243

Journal Information:: Physical Review C, Vol. 101, Issue 2; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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Title: $$β$$-delayed neutron emission studies of 137,138I and 144,145Cs performed with trapped ions

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Title: $$β$$-delayed neutron emission studies of ^137,138I and ^144,145Cs performed with trapped ions