T-dependent RMF Model Applied to Ternary Fission Studies

C. Kokila; C. Karthika; M. Balasubramaniam

doi:10.15415/jnp.2021.91016

Authors

C. Kokila Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu – 641046, India https://orcid.org/0000-0002-7079-127X
C. Karthika Department of PhysicsDepartment of Physics, Bharathiar University, Coimbatore, Tamil Nadu – 641046, India https://orcid.org/0000-0001-7718-2226
M. Balasubramaniam Department of PhysicsDepartment of Physics, Bharathiar University, Coimbatore, Tamil Nadu – 641046, India https://orcid.org/0000-0003-3784-0786

DOI:

https://doi.org/10.15415/jnp.2021.91016

Keywords:

Ternary fission, Pre-existence probability, Relative yield, Excitation energy

Abstract

Ternary decay is comparatively a rare phenomenon. The yield distribution for the thermal neutroninduced fission of ²³⁶U was investigated within the Temperature-dependent Relativistic Mean Field (TRMF) approach and statistical theory. Binding energy obtained from TRMF for the ground state and at a specific temperature is used to evaluate the fragment excitation energy, which is needed to calculate the nuclear level density. Using the ternary convolution, the yield for α-accompanied fission of ²³⁶U^* is calculated. Initial results are presented which shows a maximum yield for the fragment pair Tc + Ag +α. Further, the ternary pre-existence probability for the spontaneous fission of ²³⁶U was studied considering fixed third fragments of α,¹⁰Be and ¹⁴C using the area of the overlapping region. No significant change in the yield distribution was observed when fragment deformations are considered. However, the heavy group for the probable pair remains as ¹³²Sn with a change in mass number of the lighter fragment.

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