EXPERIMENTAL CONFIRMATION OF THE COLLINEAR CLUSTER TRIPARTITION OF THE ²⁵²CF NUCLEUS.

Deformation effects in the alpha accompanied cold ternary fission of even-even 244-260Cf isotopes

“…Using equation (12) In the alpha accompanied ternary fission of [246][247][248][249][250][251][252][253][254][255][256][257][258][259][260] Cf isotopes, the driving potential were calculated and studied as a function of fragment mass number A 1 . In the cold reaction valley plots, the minima occur at 4 He, 6 He, 10 Be, 14 C, 16 C, 22 O, 24 Ne, 28 Mg, 32 Si, 38 S, 40 S, 46 Ar, 50 Ca, 52 Ca etc. The barrier penetrability and relative yield is calculated for the alpha accompanied ternary fission of 246 Cf isotope and is plotted as a function of fragment mass number A 1 and A 2 as shown in figure 3(b In the case of 250 Cf isotope, the barrier penetrability is calculated for each charge minimized fragments found in the cold valley plot and thereafter the relative yield is calculated and plotted as a function of fragment mass numbers A 1 and A 2 as shown in figure 3(d) In the case of 252 Cf isotope, the relative yield is calculated for each charge minimized fragment combinations found in the cold valley plot and plotted as a function of fragment mass numbers A 1 and A 2 as shown in figure 3(e) In the case of 256 Cf isotope as the parent nucleus with 4 He as the light charged particle (LCP), the relative yield is calculated and plotted as a function of fragment mass numbers A 1 and A 2 as shown in figure 3(g) From the study of alpha accompanied ternary fission of even-even 244-260 Cf isotopes, we have concluded that, the fragment combinations with the higher Q value and having doubly or near doubly magic nuclei as the heavier fragment possess the highest yield.…”

“…In the alpha accompanied ternary fission of [246][247][248][249][250][251][252][253][254][255][256][257][258][259][260] Cf isotopes, the driving potential were calculated and studied as a function of fragment mass number A 1 . In the cold reaction valley plots, the minima occur at 4 He, 6 He, 10 Be, 14 C, 16 C, 22 O, 24 Ne, 28 Mg, 32 Si, 38 S, 40 S, 46 Ar, 50 Ca, 52 Ca etc. The barrier penetrability and relative yield is calculated for the alpha accompanied ternary fission of 246 Cf isotope and is plotted as a function of fragment mass number A 1 and A 2 as shown in figure 3(b).…”

“…A new type of decay mode called collinear cluster tripartition (CCT) was introduced by Pyatkov et al [24] for the spontaneous ternary fission of 252 Cf isotope and the studies [25,26] based on the collinear cluster tripartition of 236 U and 252 Cf isotopes revealed that the isotopes of Si and Ca respectively connect the isotopes of Sn to the edge fragment 68 Ni. Recently, Vijayaraghavan et al [27,28] calculated the ternary potential energy surfaces for the fragment combinations by changing the angle between the end fragments with respect to the middle fragment and hence analyzed the role of arrangements of fragments in the ternary fission process of 252 Cf isotope.…”

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

“…During the last decades the ternary decay mode has been studied in detail theoretically [10][11][12][13][14]. Without including the pre-formation factors, a coplanar three cluster model was developed by Sandulescu et al [15] to study the cold alpha accompanied ternary fission of 252 Cf.…”