ABSTRACT
X rays absorbed when heated. The OSL badge contains an aluminum oxide doped with carbon and releases light in proportion to the X rays absorbed when later struck with a laser. Differing filters mimic attenuation one might expect for shallow, lens or deep exposure. Proper use of radiation badges is to wear them exposed on the thyroid collar and under the lead apron at the waist. Unfortunately, few wear the waist badge, so most data related to exposure is derived from the thyroid collar badge.
