Abstract
A two-detector thermoluminescent dosimeter (TLD) reader was developed which records two different wavelengths of light. The detector has the capability to record two glow curves of different wavelength simultaneously. The detector was used to assess three different mixtures of TLD phosphors. Those mixtures were chosen to have different light wavelength emission with only one phosphor being sensitive to thermal neutrons. This type of combination allowed separation of thermal neutron and photon dose information. The mixtures used were: TLD-700 and TLD-800, TLD-600 and TLD-200, and TLD- 600 and TLD-900. These mixtures' response characteristics were the same as the sum of the individual phosphors response characteristics. In addition to photon and neutron sensitivity studies, a study was performed to determine the TLDs response to beta irradiation. The beta response was slightly lower than the equivalent photon response, due to attenuation by the PTFE encapsulation of the phosphors. A short term fading study was also performed which indicated the elements fading characteristics was the same as the sum of the individual phosphors fading characteristics.
Riland, Carson Allen (1995). Development of a two-detector thermoluminescent dosimeter reader and its applications. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -1575781.