Effect of fast neutrons and gamma radiation on cobalt-gelatin film

The real and imaginary parts of the dielectric constant (epsilon' and epsil on") were measured as a function of temperature at 10 kHz for a cobalt-gela tin film before and after exposure to different values of fast neutron flue nces and gamma doses. The values of the ac conductivity were found to be af fected to some extent by the type of irradiation in comparison with that of the unirradiated ones. However, the behavior of epsilon', epsilon", and ac conductivity seemed to be the same at higher and lower doses of both types of radiation. This behavior was also observed by comparing the calculated values of the activation energies for co-gelatin films before and after irr adiation. (C) 2001 John Wiley & Sons, Inc.