Problems of Radiation Medicine and Radiobiology

Chumak V., Deniachenko N., Volosky V.

Energy and angular dependencies of common types of personal dosimeters in the mirror of the First national intercomparison of individual dosimetric monitoring laboratories in Ukraine

In-depth analysis of the results of the First National Intercomparison of individual dosimetry laboratories in Ukraine has revealed energy and angular responses of the most common types of personal dosemeters and dosimetric systems. Participating laboratories use 9 different types of dosimetric systems – automatic, semi-automatic and manual. If was found that energy dependences of the most common dosemeter types in Ukraine generally correspond to the literature data on respective TLD materials (LiF:Mg,Cu,P, LiF:Mg,TiandAl2O3:С), however, due to peculiarities of holders (filters) and dose algorithms, for some dosimetry systems the energy dependences can be improved (compensated). Angular dependences proved to be more pronounced: only two systems revealed weak dependence of response on the incident angle, for other systems at large angles (?=60°) dosemeters overestimate true dose values.

Key words: intercomparison, individual dosimetric monitoring, energy dependence, angular dependence.

Problems of radiation medicine and radiobiology. 2015;20:257-268.