Response of TLD badges and cards for measurement of the operational quantity

The operational quantity, Hp(10), for strongly penetrating radiation was measured by a dosimeter placed on a phantom surface for individual external dose monitoring. Measurement of Hp(10) was carried out with a 137Cs source using CaSO4:Dy Teflon-based TLD badges and cards placed on the surface of a PMMA as well as water phantom at a depth of 10 mm. The ratio of response of the TLD discs to TLD badges and that of the TLD cards under similar conditions were identical for different experimental conditions. This experiment quantified the impact of the cassette on the dose measurement. Minor changes in the PMMA phantom thickness beyond 15 cm showed an insignificant impact on the dosimeter response