Vibration-vibration energy transfer in hydrogen molecules: H2(1) + H2(1) → H2(2) + H2(0)

The effect of molecular rotation and temperature dependence of energy transfer probabilities of the vibration-vibration process H2(1) + H2(1) → H2(2) + H2(0) have been investigated using a semi-empirical potential in the probability expression obtained from an approximate solution of the time dependent wave equation. Orientation-averaged probabilities are an order of magnitude smaller than those for collinear collisions. (orig.)