The Prompt Fission Neutron Spectrum of 235 U( n , f ) below 2.5 MeV for Incident Neutrons from 0.7 to 20 MeV
| Autor: | R. C. Haight, K.J. Kelly, Matthew Devlin, M. Q. Buckner, Clell J. Solomon, Shea Mosby, Terry N. Taddeucci, John M. O'Donnell, Ching-Yen Wu, B.A. Perdue, Brian Bucher, J.A. Gomez, J. L. Ullmann, Hye Young Lee, Roger Henderson, Denise Neudecker, Nikolaos Fotiades, M.E. Rising, Patrick Talou, Morgan C. White |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory Nuclear data Scintillator 01 natural sciences Spectral line Nuclear physics Neutron research facility 0103 physical sciences Neutron detection Neutron Fission neutron Nuclear Experiment 010306 general physics |
| Zdroj: | Nuclear Data Sheets. 148:322-337 |
| ISSN: | 0090-3752 |
| DOI: | 10.1016/j.nds.2018.02.008 |
| Popis: | New prompt fission neutron spectrum measurements are reported for 235U( n , f ) reactions induced by neutrons with energies from 0.7 to 20 MeV. These measurements cover outgoing neutron energies from 2.5 MeV down to 10 keV, using an array of 6Li-glass scintillators for neutron detection and a double time-of-flight technique. The neutrons were produced at the Weapons Neutron Research facility of the Los Alamos Neutron Science Center. A detailed MCNP® model of the experimental equipment and the surrounding room was used to interpret the experimental results. Backgrounds were measured in situ, making use of the time-dependent singles rates of the various detectors with asynchronous readout from waveform digitizers. The results presented here have been included in a re-evaluation of the fission neutron spectra for this fissioning system, a description of which is presented elsewhere in this issue. |
| Databáze: | OpenAIRE |
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