Calculated rate coefficients of reaction . Left panel: H₂ vibrational-state-specific rates from wave packet calculations (continuous curves) and QCT calculations (dashed curves). Red squares show how QCT calculations reproduce the quantum calculations for v = 7. Right panel: thermal rate coefficient (blue curve) calculated from thermal averages of the state-specific rate coefficients. The red shaded area represents the experimental values determined by Davidson & Hanson (1990) allowing for an experimental error of ±50%.