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

Abstract

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.

Authors:
ORCiD logo [1];  [2];  [3];  [3];  [4];  [1];  [5];  [4];  [6];  [6];  [3];  [5];  [7];  [8];  [8];  [5];  [9];  [2];  [3];  [7] more »;  [5];  [5] « less
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States)
  5. Univ. of Notre Dame, IN (United States)
  6. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Maryland, College Park, MD (United States)
  7. Univ. of Manitoba, Winnipeg, MB (Canada)
  8. Univ. of California, Berkeley, CA (United States)
  9. Univ. of Manitoba, Winnipeg, MB (Canada); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Science Foundation (NSF); US Department of Homeland Security (DHS); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1602426
Alternate Identifier(s):
OSTI ID: 1601700
Grant/Contract Number:  
[NA0000979; AC52-07NA27344; NA0002135; AC02-06CH11357; FG02-94ER40834]
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:
Beta decay; Nuclear structure & decays; Nucleosynthesis in explosive environments; 90 ≤ A ≤ 149; Atom & ion trapping & guiding; Radioactive beams; Spectrometers & spectroscopic techniques; Nuclear Physics

Citation Formats

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., and Strauss, S. Y. $β$-delayed neutron emission studies of 137,138I and 144,145Cs performed with trapped ions. United States: N. p., 2020. Web. doi:10.1103/PhysRevC.101.024312.
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. $β$-delayed neutron emission studies of 137,138I and 144,145Cs performed with trapped ions. United States. doi:10.1103/PhysRevC.101.024312.
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., and Strauss, S. Y. Wed . "$β$-delayed neutron emission studies of 137,138I and 144,145Cs performed with trapped ions". United States. doi:10.1103/PhysRevC.101.024312.
@article{osti_1602426,
title = {$β$-delayed neutron emission studies of 137,138I and 144,145Cs performed with trapped ions},
author = {Czeszumska, A. and Scielzo, N. D. and Caldwell, S. A. and Clark, J. A. and Savard, G. and Wang, B. S. 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. 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 = {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.},
doi = {10.1103/PhysRevC.101.024312},
journal = {Physical Review C},
number = [2],
volume = [101],
place = {United States},
year = {2020},
month = {2}
}

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