Quasiclassical trajectory study of energy relaxation process in collision of highly vibrationally excited O2 and ground-state N2

Vibrational relaxation processes in the collision of highly vibrationally excited O2 (v = 15–20) and ground-state N2 (v = 0) have been studied using a quasiclassical trajectory method. The potential energy surface of the system is obtained using the interpolating moving least-squares method. The energy transfer and the scattering processes in the collision were investigated. We found that vibrational–vibrational (V–V) transfer was dominant under the conditions of our calculations.