Rate coefficients for vibrational-translational transition processes of NO and CO from efficient forced harmonic oscillator model

Abstract

Abstract The rate coefficients of the vibrational-translational (V-T) process for NO-NO and CO-CO gas collisions are studied by the forced oscillator model. The most suitable potential parameters α for the Lennard-Jones(L-J) potential is obtained. The appropriate spatial influence factor is optimized by calculating the collision probability. Under the Bessel approximation, we use the more accurate methods Rydberg–Klynning–Rees (RKR) and Variational Algebraic Method (VAM) to calculate the vibration level energy. The accuracy of forced harmonic oscillator(FHO) transition probability is improved, especially at high vibrational quantum numbers. These methods provide some new reliable data on collision rate coefficients for the gas collision of NO-NO and CO-CO. Especially, for collisions at higher temperatures and higher vibration quantum numbers.