2016/04/21 by K P Santhosh, Sreejith Krishnan
Physics and Astronomy · #nucl-th #nucl-ex
paper · pdf · doi:10.1140/epja/i2016-16108-0
published as European Physical Journal A 52, 108 (2016) · 19 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:1504.02282, arXiv:1409.0622
arxiv created 2016/04/21 · arxiv updated 2016/04/22
Within the Unified ternary fission model (UTFM), the alpha accompanied ternary fission of even-even 244-260Cf isotopes has been studied by taking the interacting barrier as the sum of Coulomb and proximity potential. For the alpha accompanied ternary fission of 244Cf isotope, the highest yield is obtained for the fragment combination 108Ru+4He+132Te, which contain near doubly magic nuclei 132Te (N=80, Z=52). In the case of 246Cf and 248Cf isotopes, the highest yield is obtained for the fragment combinations with near doubly magic nuclei 134Te (N=82, Z=52) as the heavier fragment. The highest yield obtained for 250Cf, 252Cf, 254Cf, 256Cf, 258Cf and 260Cf isotopes is for the fragment combination with doubly magic nuclei 132Sn (N=82, Z=50) as the heavier fragment. We have included the effect of deformation and orientation of fragments and this has revealed that in addition to closed shell effect, ground state deformation also plays an important role in the calculation of relative yield of favorable fragment combinations. The computed isotopic yields for alpha accompanied ternary fission of 252Cf isotope are found to be in agreement with the experimental data. The emission probability and kinetic energy of long range alpha particle is calculated for the various isotopes of Cf and are found to be in good agreement with the experimental data.