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|a (TOE)ost966914
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|a E 1.99:llnl-jrnl-415141
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|a E 1.99:llnl-jrnl-415141
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|a llnl-jrnl-415141
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|a Event-by-event study of prompt neutrons from 239Pu(n,f)
|h [electronic resource]
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|a Washington, D.C :
|b United States. Dept. of Energy ;
|a Oak Ridge, Tenn. :
|b distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
|c 2009.
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|a PDF-file: 19 pages; size: 0.6 Mbytes.
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|a text
|b txt
|2 rdacontent.
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|a computer
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|2 rdamedia.
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|a online resource
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|a Published through the Information Bridge: DOE Scientific and Technical Information.
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|a 07/23/2009.
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|a "llnl-jrnl-415141"
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|a Physical Review C, vol. 80, N/A, October 19, 2009, pp. 044611 80 FT.
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|a Younes, W; Pruet, J; Vogt, R; Randrup, J.
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|a Employing a recently developed Monte-Carlo model, we study the fission of ²⁴°Pu induced by neutrons with energies from thermal to just below the threshold for second chance fission. Current measurements of the mean number of prompt neutrons emitted in fission, together with less accurate measurements of the neutron energy spectra, place remarkably fine constraints on predictions of microscopic calculations. In particular, the total excitation energy of the nascent fragments must be specified to within 1MeV to avoid disagreement with measurements of the mean neutron multiplicity. The combination of the Monte-Carlo fission model with a statistical likelihood analysis also presents a powerful tool for the evaluation of fission neutron data. Of particular importance is the fission spectrum, which plays a key role in determining reactor criticality. We show that our approach can be used to develop an estimate of the fission spectrum with uncertainties several times smaller than current experimental uncertainties for outgoing neutron energies of less than 2 MeV.
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|b W-7405-ENG-48.
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|a Prompt Neutrons.
|2 local.
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| 650 |
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|a Multiplicity.
|2 local.
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| 650 |
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|a Criticality.
|2 local.
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|a Excitation.
|2 local.
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| 650 |
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|a Energy Spectra.
|2 local.
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|a Neutrons.
|2 local.
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|a Fission Neutrons.
|2 local.
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| 650 |
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|a Fission.
|2 local.
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| 650 |
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|a Evaluation.
|2 local.
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| 650 |
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|a Nuclear Physics And Radiation Physics.
|2 edbsc.
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| 710 |
2 |
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|a Lawrence Livermore National Laboratory.
|4 res.
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| 710 |
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|a United States.
|b Department of Energy.
|4 spn.
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| 710 |
1 |
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
|4 dst.
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| 856 |
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|u http://www.osti.gov/servlets/purl/966914-qUXX2u/
|z Online Access
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| 907 |
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|a .b70585349
|b 03-07-23
|c 04-03-12
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| 998 |
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|a web
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| 952 |
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|p Can circulate
|a University of Colorado Boulder
|b Online
|c Online
|d Online
|e E 1.99:llnl-jrnl-415141
|h Superintendent of Documents classification
|i web
|n 1
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