 July 0, 0000 at 00:00 AM  Stephen, I've already shown that the upper limit of the evaporation induced by 00-um IR is small and that the amount induced by 0.0-um IR is completely negligible, even considering your 0:0 ratio. You just ignore that and press on. Once the light makes it past the Knudsen layer, the energy added upon its absorption is no different from any other energy below. 