Possible Fine Structure in the Delayed Neutron Yields in the Resonance Region for Pu-239
A method of analysis of fluctuation in the delayed neutron yield on the basis of the multimodal fission model was applied to the low-energy resolved resonances for Pu-239. The present calculation using recent data of the fluctuation of the mode branching ratios for the resolved resonances showed both positive and negative resonance structure in the delayed neutron yield relative to the thermal neutron value. This is in contrast to the U-235 case, for which mainly negative dips of about –3.5% were predicted
OHSAWA Takaaki;
HAMBSCH Franz-Josef;
TORII Takayuki;
2006-11-07
American Institute of Physics
JRC34245
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