Reaction rates Resonances are important for low energy particles with a normally low probability of interaction The reflection coefficient is high because of the high Coulomb barrier or the virtual discontinuity at the edge of the nuclear potential well For higher energy particles, these effects are weaker, and resonances are much less important (see blackboard) For non-resonant interactions, we can write down a (rather complicated) expression for N, the number of reactions kg -1 s -1 The main uncertainty is the specific nuclear factor, S The reaction rate rises with temperature, but falls again at very high temperature (see blackboard for N, and its T dependence)
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