Post-neutron mass chain yield distribution in the epi-cadmium neutron-induced fission of 232Th

초록

The cumulative yields of various fission products and independent yields of few fission products within the mass range of 78-153 have been measured in the epi-cadmium neutron-induced fission of Th-232 by using an off-line gamma-ray spectrometric technique. Charge distribution correction on the cumulative fission yields was applied to obtain the post-neutron mass chain yields. The peak-to-valley (P/V) ratio, full width at tenth maximum (FWTM) of light and heavy mass wing, the average light mass (<A(L)>) and heavy mass (<A(H)>) as well as the average number of neutrons (<nu>) emitted were obtained from the mass chain yields. The fission yield data in the Th-232(n, f) reaction were compared with the literature data as well as with the similar data in the Th-229(n(th), f) reaction to examine the effect of nuclear structure and the role of standard I and standard II asymmetric mode of fission.

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