Speaker
Description
Within the framework of the symmetric-asymmetric Gaussian barrier distribution (SAGBD) approach, the fusion cross-sections for 12C + 144,154Sm reactions are theoretically analyzed in the energy range lying below to well above the Coulomb barrier. In the SAGBD approach, the multidimensional nature of nuclear interaction potential is included by using a Gaussian type of weight function within simple Wong formula. The fusion dynamics of 12C + 144, 154Sm systems are strongly influenced due to the involvement of intrinsic structure of reaction partners, and such effects are described in terms of λ & V_CBRED. Because the projectile is same for both systems, the rotational states of the well deformed target (154Sm) are found to be dominant one in enhancing the fusion cross-sections at sub-barrier energies while the low-lying vibrational states of 144Sm are found to be responsible for the reported sub-barrier fusion enhancement of 12C + 144Sm reaction in comparison to the expectations of the one-dimensional barrier penetration model (BPM). For the studied reactions, the SAGBD calculations are found to appropriate for describing the behavior of the fusion cross-sections around the Coulomb barrier.
| Session | Heavy Ions and QCD |
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