Determination of the collisional energy transfer distribution responsible for the collision-induced dissociation of NO2 with Ar

- Highly-internally excited NO2 molecules undergo single-event collisional dissociation with Ar atoms to yieldvelocity-imaged products.
- Energy quantification reveals multi-exponential energy dependence of the collisional energy transfer probability function.
- Classical trajectory calculations show agreement with experiment for the dominant low-energy portion.
- Low-energy probability distribution described well by a single exponential with a decay constant of 20 cm−1.
- Calculations predict a higher probability of high energy collisions than are observed in experiments.