Decay analysis of compound nuclei with massesA≈30–200formed in reactions involving loosely bound projectiles

Abstract

The dynamics of the reactions forming compound nuclei using loosely bound projectiles is analysed within the framework of dynamical cluster decay model (DCM) of Gupta and Collaborators. We have analysed different reactions with 7 Li, 9 Be and 7 Be as neutron rich and neutron deficient projectiles, respectively, on different targets at the three E lab values, forming compound nuclei within the mass region A∼ 30 − 200. The contributions of light particles LPs (A ≤ 4) cross sections σLP , energetically favoured intermediate mass fragments IMFs (5 ≤ A2 ≤ 20) cross sections σIMF as well as fusion-fission ff cross sections σ f f constitute the σ f us (=σLP +σIMF +σ f f ) for these reactions. The contribution of the emitted LPs, IMFs and ff fragments is added for all the angular momentum upto the ℓmax value, for the resepctive reactions. Interestingly, we find that the ∆R emp , the only parameter of model and uniquely fixed to address the σ f us for all other reactions having same loosely bound projectile at the chosen incident energy. It may be noted that the dynamical collective mass motion of preformed LPs, IMFs and ff fragments or clusters through the modified interaction potential barrier are treated on parallel footing. We see that the values of modified interaction barrier heights ∆V emp B for such reactions are almost of the same amount specifically at the respective ℓmax values.

Comparative Analysis of 13,14C Induced Reactions on 232Th Target

“…It is relevant to mention here that DCM has been successfully applied to understand the fusion mechanism in mid-mass composite systems [67][68][69][73][74][75] As * formed in collision of [39][40][41][45][46][47] K isotopes with 28 Si and fusion enhancement with neutron number at near-barrier energies was studied [8]. The yields of various light particles (LPs) and intermediate mass fragments (IMFs) calculated within DCM formalism in decay of lighter compound nuclei 26-29 Al * formed with different isotopes of Oxygen and Boron, are consistent with experimental data [6]. For the heavy mass region, the compound nucleus (CN) often undergoes binary fission due to its high fissility.…”

“…Earlier, we investigated the fusion-fission of reactions involving bombardment of 12,15 C projectiles on 232 Th target [1] within dynamical cluster decay model (DCM) of Gupta and collaborators [1][2][3][4][5][6][7][8][9]. In this paper, we want to extend our study to compare the influence of two other isotopes of carbon, 13,14 C incident on the same target 232 Th.…”