Research and development of the algorithms to determine the operational personal quantities for photon using photoluminescent dosimeter

Objective: This study presents the results of investigating the dosimetric characteristics of Inlight Al2O3:C dosimeters to develop algorithms for determining effective dose, equivalent doses for lens and skin organs by evaluating the operational personal dose equivalent Hp(10) and the ICRU 95 operational personal doses. These quantities are the best approximate values to evaluate the dose limits specified in Circular 19/2012/TT-BKHCN on occupational radiation exposure control. These quantities are calibrated with the ISO 4037 standard dose fields. Research object and method: Investigating dosimetric characteristics of optically stimulated luminescent dosimeter (OSLD) – Inlight type, and applying them in the development of the personal dosimetry algorithms for radiation workers working in the radiation field of gamma and X-ray, using the method of comparing values calculated by both recently developed algorithms and Landauer's algorithm with the reference values for assessing uncertainty. Result: Initially, the algorithms have been developed to evaluate the effective energy of radiation beams using the multi-filter technique, to determine the energy of incident beam air Kerma and conversion coefficients from air Kerma to operational personal dose equivalents Hp(d), and the ICRU 95 new operational quantities. The NTTU-OSLD algorithm has shown a great improvement in energy estimation. This will be useful for other applications such as lens dose measurement by nanodot. Conclusion: The algorithms allow the evaluation of the energy of the incident beam, air Kerma, effective dose, lens and skin equivalent doses through the measurement of the quantities Hp(10), Hp(3), and Hp(0.07) as well as Hp, Dp,lens, and Dp, local skin according to ICRU 95.