Present Status of Researches on T_xo-Electron Emisson and Dosimetry

Abstract

Present status of researches on exo-electron emission and its application for radiation dosimetry are briefly reviewed. After introducing the basic concept of emission center for exo-electron, the charactristic TSEE glow curves of representative exo-sensitive materials such as LiF, CaSO₄ and BeO are mentioned with the sample preparations. And the applicability for practical dosimetory is discussed with each materials. Finally, the TSEE properties of anodic film of Ta₂O₅/Ta heat-treated, its emission center and the mean attenuation length of exo-electron in the film are introduced.