Post-Neutron Mass Yield Distribution in the Epi-Cadmium Neutron-Induced Fission of ²³³U

Abstract

Post-neutron mass yield distribution in the epi-cadmium neutron-induced fission of ²³³U has been carried out by measuring the cumulative yields of various fission products within the mass ranges of 77 to 117 and 123 to 153 using an off-line gamma-ray spectrometric technique. Independent yields of a few fission products were also measured by using the same technique. Charge distribution correction has been applied on cumulative yields to obtain the post-neutron mass yields. The mass yield distribution parameters such as full-width at tenth-maximum of light and heavy mass wings, the average light mass <A_L> and heavy mass <A_H>, and the average number of neutrons <ν> were obtained. The spectrum average neutron energy is 1.9 MeV. Thus, the role of excitation energy on the nuclear structure effect was examined by comparing the mass yield data in between the epi-cadmium and thermal neutron–induced fission of ²³³U.

Keywords:

• ²³³U(n,f) reaction
• <E_n> = 1.9 MeV
• measured fission product yields
• off-line gamma-ray spectrometric technique
• mass chain yield distribution parameters

Acknowledgments

We are thankful to R. H. Iyer, BARC, for his keen interest and support during this work. The authors are also thankful to the staff members of the reactor APSARA at BARC for their help in providing the irradiation facility and successfully carrying out the irradiations during the experiment.

Disclosure Statement

No potential conflict of interest was reported by the authors.