FIELD: physics.
SUBSTANCE: invention relates to the thermoexoelectronic (TEE) dosimetry of electron radiation and may be suitable for high-dosimetry of high-energy electron radiation (up to 10 MeV). The working substance for the thermoexoelectronic dosimetry of high-energy electron radiation based on sodium fluoride crystals additionally contains lithium fluoride and copper chloride atthe following component ratio (mol. %): NaF 98.3-98.9, LIF 1-1.5, CuCl2 0.1-0.2.
EFFECT: providing increased sensitivity of the dosimetry tract.