α-accompanied cold ternary fission of 238-244Pu isotopes in equatorial and collinear configuration
Abstract
The cold ternary fission of 238Pu, 240Pu, 242Pu and 244Pu isotopes, with 4He as light charged particle, in equatorial and collinear configuration has been studied within the Unified ternary fission model (UTFM). The fragment combination 100Zr+4He+134Te possessing the near doubly magic nuclei 134Te (N=82, Z=52) gives the highest yield in the alpha accompanied ternary fission of 238Pu. For the alpha accompanied ternary fission of 240Pu, 242Pu and 244Pu isotopes, the highest yield was found for the fragment combination with doubly magic nuclei 132Sn (N=82, Z=50) as the heavier fragment. The deformation and orientation of fragments have also been taken into account for the alpha accompanied ternary fission of 238-244Pu isotopes, and it has been found that in addition to closed shell effect, ground state deformation also plays an important role in determining the isotopic yield in the ternary fission process. The emission probability and kinetic energy of long range alpha particles have been calculated and are found to be in good agreement with the experimental data.
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