Parameterization scheme for determining the reaction cross sections at intermediate beam energies for normal and exotic nuclei

Role of projectile breakup in 6He and 6Li induced fusion reactions around barrier energies

“…The fusion excitation functions of reactions induced by light neutron-rich projectiles, 6 He and 6 Li on 209 Bi and 64 Zn targets are calculated in near barrier energy region using the model described in previous section. The values of various parameters needed in the calculations are listed in Table 1 for the projectile-target combinations considered here.…”

“…2, the fusion excitation function of 6 He + 209 Bi system around barrier energy is compared with the corresponding data taken from Ref. [9].…”

“…The nuclear reactions induced by loosely bound neutron rich nuclei lying in close vicinity of neutron drip line, both stable and radioactive, have received a great attention during the last three decades [1][2][3][4][5][6][7][8]. Particularly, the fusion of neutron rich stable and unstable projectiles with medium and heavy mass targets in near barrier energy region is the focus of recent research activities.…”

“…However, regarding the dynamical effects conflicting results have been found in several recent experimental studies [9][10][11][12][13][14]. Since beams of high intensities are required for carrying out fusion experiments, experimental investigations are limited only to fusion involving 6 He, 6,7 Li and 9 Be projectiles for which beams of reasonably good intensities are available. Also, the present theoretical understanding concerning the effect of breakup on the fusion cross section is controversial [15][16][17][18][19].…”

“…Thus further investigations, both experimental and theoretical, are needed to understand the breakup effects on fusion cross section involving weakly bound stable and unstable projectiles. In the present work we have studied the fusion reactions induced by 6 He and 6 Li projectiles with mass number A = 6 on various targets in near barrier energy region with a special emphasis on the role of breakup in fusion enhancement or suppression. Here we have used the quantum diffusion model of Sargsyan et al [20] wherein various channel coupling effects are simulated through the dissipation and fluctuation effects.…”