Numerical analysis of transient photoconductivity in insulators

Abstract
The nonlinear partial differential equations which describe transient photoconductivity in insulators are solved numerically. Trapping and recombination are included which allows photoconduction to be studied in the presence of large space charge. Use of methods for ‘‘stiff’’ differential equations insures stable time dependent solutions even for problems which have widely different time constants. The program is applied to a thin film (1000 Å) of silicon dioxide to illustrate the salient features of the numerical solutions and the capabilities of the program.