Scintillator CsI(Tl)’s maximum of the broad emission situated at 550nm which allows Si-photodiodes to be used to detect the emission. The use of a scintillator-photodiode pair makes it possible to diminish significantly the size of the detecting system (due to the use of photodiode instead of PMT), to do without high-voltage supply source, and to use detecting systems in magnetic fields. The high radiation resistance (up to 102 Gy) allows CsI(TI) to be used in nuclear, medium, radiation detection and high-energy physics etc. Special treatment ensures obtaining of CsI(TI) scintillators with a low afterglow (less than 0.1% after 5 ms) for the use in safety inspection and imaging.
