skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Properties of prompt-fission γ rays

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1179928
Grant/Contract Number:
AC52-06NA25396; LANL20135009
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 90; Journal Issue: 2; Related Information: CHORUS Timestamp: 2017-06-22 15:23:42; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Stetcu, I., Talou, P., Kawano, T., and Jandel, M. Properties of prompt-fission γ rays. United States: N. p., 2014. Web. doi:10.1103/PhysRevC.90.024617.
Stetcu, I., Talou, P., Kawano, T., & Jandel, M. Properties of prompt-fission γ rays. United States. doi:10.1103/PhysRevC.90.024617.
Stetcu, I., Talou, P., Kawano, T., and Jandel, M. Tue . "Properties of prompt-fission γ rays". United States. doi:10.1103/PhysRevC.90.024617.
@article{osti_1179928,
title = {Properties of prompt-fission γ rays},
author = {Stetcu, I. and Talou, P. and Kawano, T. and Jandel, M.},
abstractNote = {},
doi = {10.1103/PhysRevC.90.024617},
journal = {Physical Review C},
number = 2,
volume = 90,
place = {United States},
year = {Tue Aug 26 00:00:00 EDT 2014},
month = {Tue Aug 26 00:00:00 EDT 2014}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevC.90.024617

Citation Metrics:
Cited by: 21works
Citation information provided by
Web of Science

Save / Share:
  • Cited by 1
  • Prompt-fission γ rays are responsible for approximately 5% of the total energy released in fission, and therefore important to understand when modeling nuclear reactors. In this work we present prompt γ-ray emission characteristics in fission as a function of the nuclear excitation energy of the fissioning system. Emitted γ-ray spectra were measured, and γ-ray multiplicities and average and total γ energies per fission were determined for the 233U(d,pf) reaction for excitation energies between 4.8 and 10 MeV, and for the 239Pu(d,pf) reaction between 4.5 and 9 MeV. The spectral characteristics show no significant change as a function of excitation energymore » above the fission barrier, despite the fact that an extra ~5 MeV of energy is potentially available in the excited fragments for γ decay. The measured results are compared with model calculations made for prompt γ-ray emission with the fission model code gef. In conclusion, further comparison with previously obtained results from thermal neutron induced fission is made to characterize possible differences arising from using the surrogate (d,p) reaction.« less
    Cited by 1
  • Prompt-fission γ rays are responsible for approximately 5% of the total energy released in fission, and therefore important to understand when modeling nuclear reactors. In this work we present prompt γ-ray emission characteristics in fission as a function of the nuclear excitation energy of the fissioning system. Emitted γ-ray spectra were measured, and γ-ray multiplicities and average and total γ energies per fission were determined for the U(d,pf)233 reaction for excitation energies between 4.8 and 10 MeV, and for the Pu(d,pf)239 reaction between 4.5 and 9 MeV. The spectral characteristics show no significant change as a function of excitation energymore » above the fission barrier, despite the fact that an extra -5 MeV of energy is potentially available in the excited fragments for γ decay. The measured results are compared with model calculations made for prompt γ-ray emission with the fission model code gef. Further comparison with previously obtained results from thermal neutron induced fission is made to characterize possible differences arising from using the surrogate (d,p) reaction.« less
    Cited by 1
  • Cited by 5
  • The emission of prompt fission γ rays within a few nanoseconds to a few microseconds following the scission point is studied in the Hauser-Feshbach formalism applied to the deexcitation of primary excited fission fragments. Neutron and γ-ray evaporations from fully accelerated fission fragments are calculated in competition at each stage of the decay, and the role of isomers in the fission products, before β decay, is analyzed. The time evolution of the average total γ-ray energy, the average total γ-ray multiplicity, and the fragment-specific γ-ray spectra is presented in the case of neutron-induced fission reactions of 235U and 239Pu, asmore » well as spontaneous fission of 252Cf. The production of specific isomeric states is calculated and compared to available experimental data. About 7% of all prompt fission γ rays are predicted to be emitted between 10 ns and 5 μs following fission, in the case of 235U and 239Pu( nth,f) reactions, and up to 3% in the case of 252Cf spontaneous fission. The cumulative average total γ-ray energy increases by 2% to 5% in the same time interval. Lastly, those results are shown to be robust against significant changes in the model input parameters.« less