Dynamics of three-body impact with first-order approximation by Coulombic wave function in excitation channel

One of the difficulties in excitation channel with first order approximation and statements related to electronic and nuclear interactions at intermediate and high impact energies range is that considering a plane-wave as the projectile wave function case، the nuclear term portion disappears in calculation of differential and total cross section due to ourtogonality of initial and final wave functions related to bonding subsystem. To solve this problem we have used coulombic wave function as a distorted wave in calculations and investigated dynamics of three-body impact with this wave function. This study shows that momentum transfer from projectile to target is not simple as carried out with plane-wave، and weight function redistributes momentum transfer and affects the differential and total cross sections. Because there are no experimental data reported in the literature for discussing energy range our results have been compared with the available theoretical data.