Abstract:
Experimental transition current curves for polytetrafluoroethylene after exposure to high-energy ionizing
radiation are obtained. The transient current curves in irradiated polytetrafluoroethylene are analyzed based on
the discrete Fourier transform. It is shown that there is an intense maximum of dielectric absorption in the infralow frequency region. This maximum is characterized by abnormally large values of the dielectric increment,
permittivity, and the dielectric loss factor. It is concluded that the volume polarization of the irradiated
polytetrafluoroethylene is uniform. The polarization observed in this frequency range is associated with the
activation of migration of trapped charge carriers within microscopic regions.
