A Concept of Health Physics Dosimetry for Quantum Radiation

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Abstract
The concept of Health Physics dosimetry for external quantum radiation, as developed in this paper, started from the basic assumption that the dose reading of personnel dosimeters and area dosimeters shall indicate the radiation hazard to a person to the same extent. Also it will be a requirement for measuring techniques in Health Physics monitoring to assess the quantity absorbed dose instead of the quantity exposure. Phantom measurements show to what extent the reading of personnel dosimeters deviates from the free-space determined area dose. The possibilities of realizing absorbed dose measurements in free space and in conjunction with a phantom will be discussed. The new concept of Health Physics dosimetry is characterized by absorbed dose quantity measurement and by different calibration of area dosimeter (free-space irradiation) and personnel dosimeter (phantom irradiation). Dosimeter systems are described which realize the agreement between dosimeter reading of area dosimeters and personnel dosimeters and therefore provide a reasonable interpretation of personnel dosimeter readings.