Comparisons of evaporation residue cross-section of ¹⁶O and ¹⁸O induced reactions on W isotopes

It is well known that fusion dynamics are affected by the nuclear structure and neutron transfer channels of the colliding nuclei. Existing theoretical models have already established the role of nuclear deformation and vibration through the coupling of inelastic excitations in theoretical models. How-ever, a comprehensive understanding of the role of neutron transfer channels in fusion enhancement remains incomplete. Enhancement in fusion cross-section after the neutron transfer is suggested as an indirect effect of the quadrupole deformation. Also, it was identified that reactions with positive Q-values transfer channel (PQNT) channels play a vital role in sub-barrier fusion cross-section enhancement. However, many systems with positive Q-value neutron transfer (PQNT) channels do not exhibit a below-barrier fusion enhancement. Hence, more investigations are needed to end the role of the positive Q-value of neutron transfer in fusion enhancement below the Coulomb barrier energy region. In order to study the effect of positive transfer Q-value on fusion enhancement, we have performed the Evaporation Residue (ER) measurements of ¹⁸O+¹⁸²,¹⁸⁴,¹⁸⁶W reactions, which have positive 2n-transfers Q-values. One of the main objectives of this work is to compare the ER cross-section with nearby systems, ¹⁶O+¹⁸²,¹⁸⁴,¹⁸⁶W, which have negative Q-values for 2n-transfer