On-line luminescent dosimetry of product processing mode at an electron linac

Radiation-technological processes on the basis of electron accelerators, in particular, sterilization of medical devices, are regulated by international standards. The distribution of the electron flux density and absorbed dose are the main parameters of such processes, that require constant monitoring. In this work, we investigated the possibility to determine in real time the absorbed dose profile on the surface of an object processed using the effect of cathodoluminescence, that occurs when the electron flux acts on technical materials (mainly amorphous dielectrics). The results of calibration of the cathodoluminescent radiators of different composition against the absorbed dose measured by a calorimetric method are presented. The study of the novel technique at an LU-10 electron Linac of NSC KIPT made it possible to identify the sources of uncertainty and evaluate their contribution to the dose measurement. (author)