Validity of the linear coupling approximation in heavy-ion fusion reactions at sub-barrier energies
Validity of the linear coupling approximation in heavy-ion fusion reactions at sub-barrier energies
The role of higher order coupling of surface vibrations to the relative motion in heavy-ion fusion reactions at near-barrier energies is investigated. The coupled channels equations are solved to all orders and also in the linear and the quadratic coupling approximations. Taking ${}^{64}$Ni + ${}^{92,96}$Zr reactions as examples, it is …