Space Charge Measurement from the Ceramic Materials by Low-level γ-ray Irradiation

Abstract

It has been reported that γ-ray irradiation on ceramic materials causes deterioration of the dissipation factor and the electrostatic capacity due to the secondary electrons generated by the photoelectric or Compton effects. The authors have measured space charge around the Al₂O₃ sample during low level γ-ray irradiation, and have confirmed the phenomenon of repetition of electron-hole polarization and recombination on the surface of Al₂O₃ samples.