Radiation defects accumulation in cesium iodide scintillation crystals under intensive electron beam irradiation

P.V.Galiy


Physical Department, Lviv State University, Dragomanov str. 50, 290005 Lviv, Ukraine

Received May 4, 1998

Characteristics of radiative defects formation, accumulation and radiolysis of CsI crystals under moderate energies of electron irradiation at wide dose rates and dose ranges have been investigated by thermostimulated exoelectron emission, Auger electron spectroscopy and optical absorption spectroscopy. The limit values of dose rates and absorbed doses of electron irradiation causing radiation defects generation and accumulation at room temperature in crystal volume and also the surface stoichiometry disruption have been evaluated. The electron irradiation doses under which CsI occurs with cesium coagulation in metal phase have been determined. A certain quasi periodic connection of such process with irradiation dose was observed.

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