A study on light charged particle accompanied ternary fission of 253Cf

Abstract

We investigated ²⁵³Cf ternary fission followed by a light-charged particle (LCP) accompanied ternary fission. The many LCPs, include ${}^4$He, ${}^6$Li, ${}^9$Be ¹⁰B, ¹²C, ¹⁴N, ¹⁶O, ¹⁹F ²⁰Ne, ²³Na ²⁴Mg, ²⁶Al, ²⁸Si, ³⁰P ³²S, ³⁵Cl, ⁴⁰Ar, ³⁹K and ⁴⁰Ca. Using Coulomb potential and proximity potential, the overall potential has been investigated. In estimating potential, deformations and angle of orientation were taken into account. Using cold valley plots, the driving potential at its lowest level is determined. Using WKB integral, the penetration probability is evaluated. When the fission fragment combinations include equal or close to the magic number of protons or neutrons, the minimal driving potential, maximum penetration probability, and maximum logT${}_{1/2}$ are observed. Therefore, ¹³⁸Ba+⁴He+¹¹¹Ru are the most likely fission fragment combination when ²⁵³Cf undergoes LCP followed ternary fission. Therefore, ${}^4$He particle-emission coupled with two likely fission fragments are the most likely fission fragments if the nuclei ²⁵³Cf undergo LCP-accompanied ternary fission. The significance of this finding may thus be seen in the ternary fission half-lives.