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Measurement of the fission cross section of /sup 238/Pu

Conference ·
OSTI ID:5443900
A measurement of the neutron-induced fission cross section of /sup 238/Pu from 0.1 eV through 100 keV is described. The technique employed was to use the large neutron flux from the Rensselaer Intense Neutron Spectrometer to obtain an adequate ratio of the neutron-induced fission signal to the spontaneous fission background signal. A special fission chamber design employing multiple pairs of hemispherical electrodes coupled with fast electronics combine to suppress the alpha pile-up effects. The counting data were corrected for dead time losses, spontaneous fission background and flux shape variations. The corrected /sup 238/Pu data were then normalized with the resolution-broadened /sup 238/Pu ENDF/B-V library cross-section at the peaks of the 9.6 eV and 18.3 eV resonances.
Research Organization:
Rensselaer Polytechnic Inst., Troy, NY (USA). Gaerttner LINAC Lab.; Knolls Atomic Power Lab., Schenectady, NY (USA); Lawrence Livermore National Lab., CA (USA)
DOE Contract Number:
FG02-84ER40165
OSTI ID:
5443900
Report Number(s):
DOE/ER/40165-1; CONF-860906-6; ON: DE86007603
Country of Publication:
United States
Language:
English