Abstract
Between 1983 and 2004, the United Kingdom Ministry of Defence (UK MOD) assessedphoton and beta doses using the Panasonic UD803AS thermoluminescent dosemeter(TLD). The Panasonic UD803AS dosemeter is also sensitive to neutrons, and the aim ofthe present study was to ascertain whether dose assessments made using the PanasonicUD803AS TLD in UK MOD radiation fields include a conservative estimate of any neutronexposures. This would allow Panasonic UD803AS results to be taken as a measure of thetotal photon, beta and neutron dose when reconstructing dose records for the purpose ofthe ‘Compensation Scheme for Radiation Linked Diseases’. The neutron response of thePanasonic UD803AS TLD was calculated as a function of neutron energy andangle of incidence by using the MCNP5 Monte Carlo computer code, and theresults used to predict the response of the dosemeter in UK MOD neutron fields.It was found that the UD803AS dosemeter over-responded in the majority ofthese fields. It was therefore concluded that historical Panasonic UD803AS doseassessments will, for the most part, include a conservative estimate of any neutronexposure.
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