Post-neutron mass yield distribution in the thermal neutron induced fission of 238Pu

Abstract

The cumulative and independent yields of various fission products within the mass range of 83–155 have been measured in the thermal neutron induced fission of 238Pu by using an off-line γ-ray spectrometric technique. From the cumulative yields, post-neutron mass chain yields were obtained by using the charge distribution correction. From the mass yields data, the full width at tenth maximum (FWTM) of light and heavy mass wing, the average light mass (<AL > ) and heavy mass (<AH > ) as well as the average number of neutrons (<ν > ) emitted were obtained. The mass yield data in the 238Pu(nth, f) reaction was compared with the similar data of 241Pu(nth, f) reaction to examine the nuclear structure effect.