Dynamics of radiation-induced conductivity in the presence of spatial charge

The previously proposed creation-annihilation model of electric conductivity (CAMEC) was applied to the case of radiation-induced conductivity (RIC) in dielectrics. The numerical calculations for Teflon-like material were performed. The results show that if radiation-induced conductivity is less than 10−13 S/m, the RIC has enough time to attain very low values before it nearly compensates the spatial, implanted charge. In general, application of the one-dimensional CAMEC to the case of RIC qualitatively reproduces the experimentally observed radiation effects on the lifetime of electrets.