Display options
Cite
Fijałkowska A, Karny M, Rykaczewski KP, et al. Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν[over ¯]_{e} flux calculation. Phys Rev Lett. 2017;119(5):052503doi: 10.1103/PhysRevLett.119.052503.
Fijałkowska, A., Karny, M., Rykaczewski, K. P., Rasco, B. C., Grzywacz, R., Gross, C. J., Wolińska-Cichocka, M., Goetz, K. C., Stracener, D. W., Bielewski, W., Goans, R., Hamilton, J. H., Johnson, J. W., Jost, C., Madurga, M., Miernik, K., Miller, D., Padgett, S. W., Paulauskas, S. V., Ramayya, A. V., & Zganjar, E. F. (2017). Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν[over ¯]_{e} flux calculation. Physical review letters, 119(5), 052503. https://doi.org/10.1103/PhysRevLett.119.052503
Fijałkowska, A, et al. "Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν[over ¯]_{e} flux calculation." Physical review letters vol. 119,5 (2017): 052503. doi: https://doi.org/10.1103/PhysRevLett.119.052503
Fijałkowska A, Karny M, Rykaczewski KP, Rasco BC, Grzywacz R, Gross CJ, Wolińska-Cichocka M, Goetz KC, Stracener DW, Bielewski W, Goans R, Hamilton JH, Johnson JW, Jost C, Madurga M, Miernik K, Miller D, Padgett SW, Paulauskas SV, Ramayya AV, Zganjar EF. Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν[over ¯]_{e} flux calculation. Phys Rev Lett. 2017 Aug 04;119(5):052503. doi: 10.1103/PhysRevLett.119.052503. Epub 2017 Aug 02. PMID: 28949741.
Copy Download .nbib Format: NLM
Share it on

Phys Rev Lett. 2017 Aug 04;119(5):052503. doi: 10.1103/PhysRevLett.119.052503. Epub 2017 Aug 02.

Impact of Modular Total Absorption Spectrometer measurements of β decay of fission products on the decay heat and reactor ν[over ¯]_{e} flux calculation.

Physical review letters

A Fijałkowska, M Karny, K P Rykaczewski, B C Rasco, R Grzywacz, C J Gross, M Wolińska-Cichocka, K C Goetz, D W Stracener, W Bielewski, R Goans, J H Hamilton, J W Johnson, C Jost, M Madurga, K Miernik, D Miller, S W Padgett, S V Paulauskas, A V Ramayya, E F Zganjar

Affiliations

  1. Faculty of Physics, University of Warsaw, PL-02-093 Warsaw, Poland.
  2. Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903, USA.
  3. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37966, USA.
  4. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
  5. JINPA, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
  6. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
  7. Heavy Ion Laboratory, University of Warsaw, PL-02-093 Warsaw, Poland.
  8. CIRE Bredesen Center, University of Tennessee, Knoxville, Tennessee 37966, USA.
  9. Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831, USA.
  10. Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA.

PMID: 28949741 DOI: 10.1103/PhysRevLett.119.052503

Abstract

We report the results of a β-decay study of fission products ^{86}Br, ^{89}Kr, ^{89}Rb, ^{90gs}Rb, ^{90m}Rb, ^{90}Kr, ^{92}Rb, ^{139}Xe, and ^{142}Cs 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 ^{235}U and ^{239}Pu by approximately 2% and 1%, respectively, improving agreement between results of calculations and direct observations. New MTAS results reduce the reference reactor ν[over ¯]_{e} flux used to analyze reactor ν[over ¯]_{e} interaction with detector matter. The reduction determined by the ab initio method for the four nuclear fuel components, ^{235}U, ^{238}U, ^{239}Pu, and ^{241}Pu, amounts to 0.976, 0.986, 0.983, and 0.984, respectively.

Publication Types