Photoconductivity of γ-irradiated methyltetrahydrofuran glass at 77 °K

Abstract

γ-Irradiated glasses of methyltetrahydrofuran at 77 °K exhibit photoconductivity on illumination with visible light. A variety of kinetic effects are observed as the wavelength of the exciting light is changed from blue to the near infrared. It is suggested that, due to the coulombic field of the positive ions in the glass, some electrons can be released by red light while others can be released only by blue light. A thermally unstable red sensitive center can also be formed in the glass during illumination with blue light. This unstable center could be a dielectron.