MOCASSIN 2.02 manual
This keyword activated the temperature spiking routines (quantum grain heating). It is only valid for simulations including dust.
real1 is the limiting size of grain radii [μm] that will be allowed to spike (i.e. grains with a <
real1 will spike).
real2 is the minimum convergence level for the spiking to occur. Please read the notes on Grain temperature spiking procedures.