Dose enhancement in a room cobalt-60 source
A room Co-60 source was characterized using thermoluminescent dosimeters (TLDs) and pMOS RADFETs. Measurements were made over a range of dose rates between 0.8 and 100 mrad(Si)/s. Dose enhancement (DE) was measured using RADFETs with and without gold-flashed kovar lids. DE factors ranged from 1.05 to 2.35. A method was developed to predict dose enhancement as a function of position and test configuration. This method involves separation of direct and scattered gamma dose rate contributions.
Simons, M., Pease, RL., Fleetwood, DM., Schwank, JR., & Krzesniak, MF. (1997). Dose enhancement in a room cobalt-60 source. IEEE Transactions on Nuclear Science, 44(6, Part 1), 2052-2057. DOI: 10.1109/23.658990