Abstract
The dosimetric characteristics of γ-radiation-induced defects in magnesium lactate (ML) rods (3.5mm×10mm) formulated by mixing ML with molten mixtures of paraffin wax and EVA copolymer have been investigated using electron paramagnetic resonance (EPR). The EPR spectrum of irradiated ML rods was characterized by a quartet signal with the spectroscopic splitting g-factor of 2.0048±0.0003 at 0.4mT. The useful dose range of the rod dosimeter was 100Gy to 80kGy. The mass attenuation coefficient, μ/ρ, and the mass energy-absorption coefficient, μen/ρ, versus energy in the range of 10keV to 20MeV indicate that the prepared ML dosimeter is typically adipose tissue equivalent overall this energy range. The overall combined uncertainties (at 2σ) associated with routine dose monitoring in the dose range of 0.1–10kGy and 10–80kGy were found to be 6.14% and 6.36%, respectively.
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