Ecology safety technique for growth of csi:tl crystals with internal radioisotopes for radioecological monitoring - Науково-технічний журнал «Техногенно-екологічна безпека»

Ecology safety technique for growth of csi:tl crystals with internal radioisotopes for radioecological monitoring

A. Kudin, V. Muntyan, T. Oliynyk, K. Kudin

ABSTRACT

The ecological safety technique the obtaining of scintillator for radioecology monitoring has been proposed. CsI:Tl crystals have been grown by directed crystallization in quartz ampoules. Grown ingots do not interact with material of container. Crystals are not cracked during cooling and subsequent machining. The technique of crystal growth excludes the surface melting of ingot that improves the ecological safety and reduces energy costs. and ions do not present in grown crystals according to IR spectra of vibration absorption in which the bands of noted impurities are absent. Electron absorption in visible range dues not shows the presence of and -centers after irradiation. Spectrometric characteristics of manufactured scintillators are not inferior to standard. The developed technique is recommended to crystal growth of CsI:Tl with internal radioisotopes for ecological monitoring. The peculiarity of this technique is the dehydration of row material at T £ 40 °C in conditions which exclude the photolysis of salt.

Keywords: ecological safety, radioecology monitoring, crystal growth, surface melting, scintillation characteristics.

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ЛІТЕРАТУРА

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