In the epi-cadmium neutron induced fission of \({}^{\text {240}}\)Pu, cumulative yields of fission products within the mass range of 83–117 and 123–157 as well as independent yields of few fission products have been measured by using an off-line \(\gamma \)-ray spectrometric technique. The post-neutron mass yields were obtained from the cumulative yields after applying the charge distribution correction. From the mass yields data, the mass distribution parameters like full width at tenth maximum (FWTM) of light and heavy mass wing, the peak-to-valley (P/V) ratio, the average light mass (\(<\hbox {A}_{\text {L}}>\)) and heavy mass (\(< \hbox {A}_{\text {H}}>\)) as well as the average neutrons number (\(<\nu>\)) were obtained. Since, the even–odd effect in between the \({}^{\text {240}}\)Pu(n, f) and \({}^{\text {241}}\hbox {Pu}(\hbox {n}_{\text {th}}\), f) reactions are comparable, the mass yield data in between the two fissioning systems were compared to examine the role of small difference in excitation energy on nuclear structure effect. The role of standard I and standard II asymmetric modes of fission was also examined.

在epi镉中子诱发的\（{} ^ {\ text {240}} \） Pu裂变中，裂变产物的累积产量在83–117和123–157的质量范围内，并且少数裂变的独立产量产品已使用离线\（\ gamma \）射线光谱仪技术进行了测量。在应用电荷分布校正后，从累积产率获得中子后质量产率。根据质量收益数据，质量分布参数，例如轻质和重质机翼的十分之一全宽（FWTM），峰谷比（P / V），平均轻质量（\（<\ hbox { A} _ {\ text {L}}> \））和重物（\（<\ hbox {A} _ {\ text {H}}> \））以及平均中子数（\（< nu> \））。由于\（{} ^ {\ text {240}} \） Pu（n，f）和\（{} ^ {\ text {241}} \ hbox {Pu}（\横向盒{N} _ {\文本{第}} \）中，f）的反应是相当的，在这两个裂变系统之间的质量产率数据进行比较，以检查差小的激发能在核结构的影响的作用。还检查了标准I和标准II非对称裂变模式的作用。