RESONANCE RADIATION TRANSFER IN DENSE DISPERSIVE MEDIA

摘要

The theory of resonance radiation transfer in highly absorptive media is devel- oped. The system of equations for generalized spectral "intensity" of radiation and popu- lation densities of excited states is obtained. The generalized "intensity" depends on frequency and wave number which are independent variables, and obeys simultaneously two equations. One of them has the form of a kinetic equation and the other one the form of a wave equation with a source in right hand side. The observable spectral intensity of radiation can be obtained from the generalized one by the proper integration over wave numbers; inside thick media it may be significantly higher than Planck intensity.