Collisional quenching and energy transfer of NO (D2Σ+, v′ = 0)

For N2, the resonant energy transfer between NO (D) and N2 was investigated. We observed quenching and enhanced fluorescence processes caused by the energy transfer between the excited states. Such pressure dependent processes could cause the disagreement among previous investigators. We also employed the collision complex model to derive the potential well depths of the van der Waals (vdw) complexes. Calculations were made by involving empirical kinetic data for the quenching gases as well as the experimental quenching cross-sections. Results show deep vdw potential wells for NO (D) with the gases studied here. Among all data, the potential well depths for noble gases are smaller compared with other reactive gases. The calculated results are then compared with the experimental well depths of NO(D)Ar.