Microscopic Calculation of Fission Fragment Energies for the 239Pu(nth,f) Reaction
Abstract
We calculate the total kinetic and excitation energies of fragments produced in the thermalinduced fission of {sup 239}Pu. This result is a proofofprinciple demonstration for a microscopic approach to the calculation of fissionfragment observables for applied data needs. In addition, the calculations highlight the application of a fully quantum mechanical description of scission, and the importance of exploring scission configurations as a function of the moments of the fragments, rather than through global constraints on the moments of the fissioning nucleus. Using a static microscopic calculation of configurations at and near scission, we have identified fission fragments for the {sup 239}Pu (n{sub th}, f) reaction and extracted their total kinetic and excitation energies. Comparison with data shows very good overall agreement between theory and experiment. Beyond their success as a proof of principle, these calculations also highlight the importance of local constraints on the fragments themselves in microscopic calculations.
 Authors:
 Publication Date:
 Research Org.:
 Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1037849
 Report Number(s):
 LLNLTR502781
TRN: US1201770
 DOE Contract Number:
 W7405ENG48
 Resource Type:
 Technical Report
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; EXCITATION; FISSION; FISSION FRAGMENTS; KINETICS
Citation Formats
Younes, W, and Gogny, D. Microscopic Calculation of Fission Fragment Energies for the 239Pu(nth,f) Reaction. United States: N. p., 2011.
Web. doi:10.2172/1037849.
Younes, W, & Gogny, D. Microscopic Calculation of Fission Fragment Energies for the 239Pu(nth,f) Reaction. United States. doi:10.2172/1037849.
Younes, W, and Gogny, D. Mon .
"Microscopic Calculation of Fission Fragment Energies for the 239Pu(nth,f) Reaction". United States.
doi:10.2172/1037849. https://www.osti.gov/servlets/purl/1037849.
@article{osti_1037849,
title = {Microscopic Calculation of Fission Fragment Energies for the 239Pu(nth,f) Reaction},
author = {Younes, W and Gogny, D},
abstractNote = {We calculate the total kinetic and excitation energies of fragments produced in the thermalinduced fission of {sup 239}Pu. This result is a proofofprinciple demonstration for a microscopic approach to the calculation of fissionfragment observables for applied data needs. In addition, the calculations highlight the application of a fully quantum mechanical description of scission, and the importance of exploring scission configurations as a function of the moments of the fragments, rather than through global constraints on the moments of the fissioning nucleus. Using a static microscopic calculation of configurations at and near scission, we have identified fission fragments for the {sup 239}Pu (n{sub th}, f) reaction and extracted their total kinetic and excitation energies. Comparison with data shows very good overall agreement between theory and experiment. Beyond their success as a proof of principle, these calculations also highlight the importance of local constraints on the fragments themselves in microscopic calculations.},
doi = {10.2172/1037849},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 03 00:00:00 EDT 2011},
month = {Mon Oct 03 00:00:00 EDT 2011}
}

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