engleski

Determination of X-ray effective energy using CaF_2: Mn and LiF: Mg, Ti thermoluminiscent dosimeters

The possibilities of determination of X-ray effective energy using the energy dependence of the response ratio of two thermoluminescent dosimeters are presented. CaF2:Mn dosimeters with a large and LiF:Mg, Ti with much lower energy dependence, were used. The calibration factors were obtained for the energy of 137-Cs gamma rays and dosimeters energy dependences measured with X-ray beams with the known effective energies were normalized to 137-Cs gamma radiation. The results obtained from the energy calibration curves were compared with the calculations using the ratios of the mass-energy absorption coefficients and pertain uncertainties were discussed. The method was applied for effective energy determinations of diagnostic X-ray machines.

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