Fission fragmentation analysis of 211At* nucleus formed in 19F+192Os reaction
- Vol.57(8), Aug
- New Delhi NISCAIR 2019
- 576-579p.
The fission decay of 211At* compound nucleus formed in 19F + 192Os reaction has been studied using dynamical cluster-decay model (DCM) and the calculated fission cross-sections find nice agreement with the experimental data. The DCM - calculated preformation probability P0 suggests the multimodal fission distribution of 211At* nucleus which is systematically analyzed over a wide energy range (Ec.m = 75.7 MeV - 95.3 MeV). The behavior of fragment mass distribution shows that the contribution of asymmetric fragments is predominant across the Coulomb barrier. However, the contribution of symmetric component is relatively more at below barrier region. The range of fission fragments is identified for the decay of 211At* compound nucleus, where 85Br and its complementary fragment 126Sn form the most preferred fission-pair, independent of incident energy. Finally, a comparison of peak ratio of the symmetric and asymmetric fission fragments is worked out as a function of incident energy for having better insight of fragmentation path in the fissioning channel. Beside this, the dependence of fission fragment mass distribution on angular momentum (l) is duly addressed at extreme centre-of-mass energies.