Abstract
Abstract A multi-element TLD badge system has been designed for use with a Teledyne Isotopes TLD system. The badge contains four areas, each with its unique filtration, to allow discrimination between beta and gamma contributions at the various energies present in a mixed radiation field. The active TL element in the badge consists of CaSO4:Dy embedded in Teflon. Filtration from three filter elements allows energy and radiation discrimination in the badge. These filters are designed as follows: (a) a beta shield to filter out 97% of the incident betas; (b) a gamma energy compensation filter to allow dose determination for photon radiation of all energies; and (c) a bias filter to record all high energy photons. Doses recorded by the TL element under each filter are compared with the total dose recorded under an open window. Intercomparisons of recorded doses from these four areas then allow both beta-gamma discrimination and gamma energy discrimination.
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