Effect of coupling on sub-barrier fusion: the case of ³⁷Cl+¹³⁰Te system

Fusion at near-to-extremely sub-barrier energies has been extensively studied in last few decades as this is useful to reveal various aspects of quantum mechanics, improve the prevailing knowledge of static and dynamic properties of nuclei, and has the probability to explore suitable condition to produce long-lived superheavy nuclei. In classical point of view, fusion can occurs only if the system overcomes the residual barrier, formed due to equilibration of attractive nuclear potential and repulsive Coulomb potential between them. However, some experimental observations suggest that the fusion occurs also at sub-barrier energies. As per the present understanding, sub-barrier fusion occurs due to the quantum mechanical tunnelling, static and dynamic deformations, and positive Q-value neutron transfer channels (PQNT). In order to understand the effect of aforesaid aspects, the fusion cross-sections of ³⁷Cl+¹³⁰Te system is measured from 15 % above to 10 % below the Bass barrier (V_B)