Ternary fission of U235 by 14-MeV neutrons

α-accompanied cold ternary fission ofPu238–244isotopes in equatorial and collinear configuration

“…The ternary fragmentation of 238 Pu, 240 Pu, 242 Pu and 244 Pu with 4 He as light charged particle for the equatorial and collinear configurations are studied using the concept of cold reaction valley which was introduced in relation to the structure of minima in the so called driving potential. According to the Quantum mechanical fragmentation theory (QMFT) [40], the role of shell effects (largest for a spherically closed or nearly closed shell nucleus) arises through "cold reaction" or "cold decay" valleys, corresponding to the potential energy minima in the calculated fragmentation potential.…”

“…[1]), where the authors have computed the number of alpha particles emitted in coincidence with the fission of 235 U and 239 Pu isotopes. Later Perfilov et al [2][3][4] have studied the energy spectra of alpha particles for ternary fission of different isotopes of uranium, plutonium and curium isotopes and in 1964 Malkin et al [5] have studied the spectrum of long range alpha particle from the spontaneous fission of 244 Cm isotope and obtained the most probable energy of the alpha particle as 15.8MeV. The angular distributions and the energy distributions of long range alpha particles emitted from the spontaneous ternary fission of 252 Cf isotope have been studied using the statistical theory of nuclear fission by Vitta [6] and the multiparameter measurements are performed by Theobald et al, in order to compute the kinetic energies and relative angles of the three particles emitted in the ternary fission process [7].…”

“…Later in the beginning of the twenty-first century Florescu et al [16] calculated the pre-formation amplitude for 4 He and 10 Be clusters formed in the ternary fission of 252 Cf. In terms of spheroidal co-ordinates, Delion et al [17] studied the dynamics of cold ternary fission of 252 Cf isotope with light charged particle as 4 He and 10 Be.…”

“…Later in the beginning of the twenty-first century Florescu et al [16] calculated the pre-formation amplitude for 4 He and 10 Be clusters formed in the ternary fission of 252 Cf. In terms of spheroidal co-ordinates, Delion et al [17] studied the dynamics of cold ternary fission of 252 Cf isotope with light charged particle as 4 He and 10 Be. The clusters heavier than alpha particles like 5 He, 7 He and 8 Li that formed during the spontaneous ternary fission of 252 Cf has been studied by Kopatch et al [18].…”

“…Recently, using UTFM, we had evaluated the maximum yield obtained for the 4 He, 10 Be and 14 C accompanied ternary fission of 242 Cm isotope [31] and the emission probability of long range alpha particle for the various fragmentations were also calculated. Later, the emission probabilities and kinetic energies of long range alpha particles emitted from the alpha accompanied ternary fission of even-even [244][245][246][247][248][249][250][251][252] Cm isotopes were calculated [32] and the favorable fragment combinations were singled out for both the equatorial and collinear configurations.…”