Kinetics of the temperature fields in a light-scattering layer heated by a radiant flux

The process of heating and cooling down of a light-scattering and absorbing plane-parallel layer irradiated by a light pulse is discussed. Results are obtained by solving numerically the differential equations of radiation transfer and heat conduction. By the method of finite-difference approximation of space derivatives the problem is reduced to a system of ordinary differential equations with respect to time for the temperature at each point of the layer. Results of calculations for different durations and powers of pulses and different optical and thermophysical parameters of the medium are reported. A comparison is made of the characteristics of temperature processes in the layer on the source side of incidence of a light pulse and on the opposite side.[PUBLICATION ABSTRACT]