1. Introduction

The unstable nuclei undergo radioactive decay by emitting radiations such as α, β and γ. Nuclear fission is another important process in which the nucleus splits into particles spontaneously or through induced processes along with the release of energy. When the excitation energy of the fragments is smaller, no neutrons are emitted and the phenomenon is known as cold fission. In such processes, one of the fragments was found to be associated with the closed-shell nuclei.

Ternary fission is an exotic decay mode in which the parent system splits into three fragments, and can be used as a probe to study the nuclear structure information. α accompanied fission is mostly observed as the light charged particle accompanied fission with its energy spectrum from 6 to 40 MeV. The size of the third particle varies from neutron to the case of true ternary fission in which the three fission fragments are of equal mass. Light particles such as H, Li, Be, and C were also observed in the spontaneous fission of various parent systems.

The experimental investigation [1] for the neutron-induced fission of 235U indicated the presence of one α-particle per 250 fissions. Further Tsien et al., [2] studied the mass and kinetic energy of fission fragments in the tripartition of 235U. Mostly the third particle was observed perpendicular to the other two heavier masses. In addition, the authors reported the quadripartition of the uranium

2. Methodology

The unstable nuclei undergo radioactive decay by emitting radiations such as α, β and γ. Nuclear fission is another important process in which the nucleus splits into particles spontaneously or through induced processes along with the release of energy. When the excitation energy of the fragments is smaller, no neutrons are emitted and the phenomenon is known as cold fission. In such processes, one of the fragments was found to be associated with the closed-shell nuclei.

Ternary fission is an exotic decay mode in which the parent system splits into three fragments, and can be used as a probe to study the nuclear structure information. α accompanied fission is mostly observed as the light charged particle accompanied fission with its energy spectrum from 6 to 40 MeV. The size of the third particle varies from neutron to the case of true ternary fission in which the three fission fragments are of equal mass. Light particles such as H, Li, Be, and C were also observed in the spontaneous fission of various parent systems.

The experimental investigation [1] for the neutron-induced fission of 235U indicated the presence of one α-particle per 250 fissions. Further Tsien et al., [2] studied the mass and kinetic energy of fission fragments in the tripartition of 235U. Mostly the third particle was observed perpendicular to the other two heavier masses. In addition, the authors reported the quadripartition of the uranium

Reference

1. J. Błocki, J. Randrup, W. Swiatecki and C. F. Tsang, Ann. Phys. (NY) 105, 427 (1977).
   https://doi.org/10.1103/PhysRev.71.327
2. J. Błocki, J. Randrup, W. Swiatecki and C. F. Tsang, Ann. Phys. (NY) 105, 427 (1977).
   https://doi.org/10.1103/PhysRev.71.327