Mass yield distribution in the fission of ${}^{244}$Cm induced by a spectrum of epi-cadmium to fast neutron

Abstract

The cumulative yields of various fission products within the mass range of 83–119 and 123–158 as well as independent yields of few fission products in the fission of $^{\mathrm {244}}\hbox {Cm}$ induced by a spectrum of epi-cadmium to fast neutron have been measured by using an off-line $\upgamma$-ray spectrometric technique. Charge distribution correction was applied on the cumulative yields to obtain the post-neutron mass yields of fission products. The peak-to-valley (P/V) ratio, the full width at tenth maximum (FWTM) of light and heavy mass wing, the average light mass ($<\!\hbox {A}_{\mathrm {L}}\!>$) and heavy mass ($<\!\hbox {A}_{\mathrm {H}}\!>$) as well as the average number of neutrons ($<\!\nu \!>$ ) were obtained from the mass yield distribution. The mass yield data in between the $^{\mathrm {244}}\hbox {Cm(n, f)}$ and $^{\mathrm {245}}\hbox {Cm}(\hbox {n}_{\mathrm {th}}$, f) reactions were compared to examine the role of small difference of excitation energy on P/V ratio and nuclear structure effect as well as on the standard I and standard II asymmetric modes of fission.