The systematic study of quenching rate coefficients of NO(X2Π) colliding by NO(A2Σ+) and N2(A3Σ+u, B3Πg)

The quenching rate coefficients of the target molecule NO(X2Π,v*=0–3) colliding by NO(A2Σ+,v=0–20), N2(A3Σ+ u,v=0–23) and N2(B3Πg,v=0–28) are given. Our results fill the gaps in the quenching rate coefficients of high vibrational energy levels v. Moreover, rate coefficients for NO(X2Π,v*=0) and N2(X1Σ+ g, v*=3) colliding by NO(A2Σ+,v=0–20) at different temperatures are calculated. Our results provide more accurate numerical basis for the entry of aircraft into the atmosphere at high temperature. [Display omitted] •Based on the CASSCF method, the potential energy curves of NO and N2 molecules are calculated, and the results are in good agreement with a numerical RKR potential fitted by the Dunham coefficients.•Based on the RKR potential, accurate Frank-Condon factors of NO(A2Σ+→X2Π), N2(A3Σ+u → X1Σ+g) and N2(B3Πg → X1Σ+g) are obtained.•Based on Frank-Condon factors and Rosen-Zener approximation, the quenching rate coefficient of the high vibrational energy levels are calculated.•The influence of the vibrational excitation of the target molecule and the vibrational energy level of the colliding molecule on the rate coefficient are studied.•Quenching rate coefficients of NO and N2 colliding by NO are calculated at different temperature. MRCI approach was used to investigate the PECs for NO and N2. These PECs are in good agreement with the RKR potential, and by using RKR potential we obtain accurate Frank-Condon factors. Based on Rosen-Zener approximation and Frank-Condon factors, we calculate the quenching rate coefficients of NO(X2Π,v*=0–3) colliding by NO(A2Σ+,v = 0–20), N2(A3Σ+u,v = 0–23) and N2(B3Πg,v = 0–28). The higher vibrational excitation v* is more conducive to the occurrence of quenching. Moreover, rate coefficients of NO(X2Π,v*) and N2(X1Σ+g,v*) colliding by NO(A2Σ+,v = 0–20) are calculated at high temperature. Our results provide more accurate numerical basis for the entry of aircraft into the atmosphere at high temperature.