Impact of Modular Total Absorption Spectrometer measurements of decay of fission products on the decay heat and reactor flux calculation
Abstract
Here, we report the results of a β-decay study of fission products 86Br, 89Kr, 89Rb, 90gsRb, 90mRb, 90Kr, 92Rb, 139Xe, and 142Cs performed with the Modular Total Absorption Spectrometer (MTAS) and on-line mass-separated ion beams. These radioactivities were assessed by the Nuclear Energy Agency as having high priority for decay heat analysis during a nuclear fuel cycle. We observe a substantial increase in β feeding to high excited states in all daughter isotopes in comparison to earlier data. This increases the average γ-ray energy emitted by the decay of fission fragments during the first 10 000 s after fission of 235U and 239Pu by approximately 2% and 1%, respectively, improving agreement between results of calculations and direct observations. New MTAS results reduce the reference reactor ¯νe flux used to analyze reactor ¯νe interaction with detector matter. The reduction determined by the ab initio method for the four nuclear fuel components, 235U, 238U, 239Pu, and 241Pu, amounts to 0.976, 0.986, 0.983, and 0.984, respectively.
- Authors:
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- Univ. of Warsaw, Warsaw (Poland); Rutgers Univ., New Brunswick, NJ (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Warsaw, Warsaw (Poland); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Louisiana State Univ., Baton Rouge, LA (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Warsaw, Warsaw (Poland)
- Oak Ridge Associated Univ., Oak Ridge, TN (United States)
- Vanderbilt Univ., Nashville, TN (United States)
- Louisiana State Univ., Baton Rouge, LA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1492173
- Alternate Identifier(s):
- OSTI ID: 1373799
- Grant/Contract Number:
- AC05-00OR22725; FG02-96ER40983; NA0002132; FG02-96ER40978; FG02-96ER41006; FG05-88ER40407
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 119; Journal Issue: 5; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Fijałkowska, Aleksandra G., Karny, Marek, Rykaczewski, Krzysztof P., Rasco, Bertis C., Grzywacz, Robert Kazimierz, Gross, Carl J., Wolińska-Cichocka, Marzena, Goetz, K. C., Stracener, Daniel W., Bielewski, W., Goans, R., Hamilton, J. H., Johnson, J. W., Jost, C., Madurga, M., Miernik, Krzysztof, Miller, D., Padgett, S. W., Paulauskas, S. V., Ramayya, A. V., and Zganjar, E. F. Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν¯e flux calculation. United States: N. p., 2017.
Web. doi:10.1103/PhysRevLett.119.052503.
Fijałkowska, Aleksandra G., Karny, Marek, Rykaczewski, Krzysztof P., Rasco, Bertis C., Grzywacz, Robert Kazimierz, Gross, Carl J., Wolińska-Cichocka, Marzena, Goetz, K. C., Stracener, Daniel W., Bielewski, W., Goans, R., Hamilton, J. H., Johnson, J. W., Jost, C., Madurga, M., Miernik, Krzysztof, Miller, D., Padgett, S. W., Paulauskas, S. V., Ramayya, A. V., & Zganjar, E. F. Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν¯e flux calculation. United States. https://doi.org/10.1103/PhysRevLett.119.052503
Fijałkowska, Aleksandra G., Karny, Marek, Rykaczewski, Krzysztof P., Rasco, Bertis C., Grzywacz, Robert Kazimierz, Gross, Carl J., Wolińska-Cichocka, Marzena, Goetz, K. C., Stracener, Daniel W., Bielewski, W., Goans, R., Hamilton, J. H., Johnson, J. W., Jost, C., Madurga, M., Miernik, Krzysztof, Miller, D., Padgett, S. W., Paulauskas, S. V., Ramayya, A. V., and Zganjar, E. F. Wed .
"Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν¯e flux calculation". United States. https://doi.org/10.1103/PhysRevLett.119.052503. https://www.osti.gov/servlets/purl/1492173.
@article{osti_1492173,
title = {Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν¯e flux calculation},
author = {Fijałkowska, Aleksandra G. and Karny, Marek and Rykaczewski, Krzysztof P. and Rasco, Bertis C. and Grzywacz, Robert Kazimierz and Gross, Carl J. and Wolińska-Cichocka, Marzena and Goetz, K. C. and Stracener, Daniel W. and Bielewski, W. and Goans, R. and Hamilton, J. H. and Johnson, J. W. and Jost, C. and Madurga, M. and Miernik, Krzysztof and Miller, D. and Padgett, S. W. and Paulauskas, S. V. and Ramayya, A. V. and Zganjar, E. F.},
abstractNote = {Here, we report the results of a β-decay study of fission products 86Br, 89Kr, 89Rb, 90gsRb, 90mRb, 90Kr, 92Rb, 139Xe, and 142Cs performed with the Modular Total Absorption Spectrometer (MTAS) and on-line mass-separated ion beams. These radioactivities were assessed by the Nuclear Energy Agency as having high priority for decay heat analysis during a nuclear fuel cycle. We observe a substantial increase in β feeding to high excited states in all daughter isotopes in comparison to earlier data. This increases the average γ-ray energy emitted by the decay of fission fragments during the first 10 000 s after fission of 235U and 239Pu by approximately 2% and 1%, respectively, improving agreement between results of calculations and direct observations. New MTAS results reduce the reference reactor ¯νe flux used to analyze reactor ¯νe interaction with detector matter. The reduction determined by the ab initio method for the four nuclear fuel components, 235U, 238U, 239Pu, and 241Pu, amounts to 0.976, 0.986, 0.983, and 0.984, respectively.},
doi = {10.1103/PhysRevLett.119.052503},
journal = {Physical Review Letters},
number = 5,
volume = 119,
place = {United States},
year = {Wed Aug 02 00:00:00 EDT 2017},
month = {Wed Aug 02 00:00:00 EDT 2017}
}
Web of Science
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