Abstract
The observed response of CR-39 based personnel neutron dosimeters may be influenced significantly by the environment in which the dosimeters are exposed. One of the factors which may effect the performance of the dosimeters is the presence of gamma rays with neutron fields. To quantify this, samples of CR-39 are exposed to neutrons, gamma rays, alpha particles and fission fragments under various conditions. The effect of presence of gamma rays with neutrons on the response of CR-39-based neutron dosimeter is investigated. The influence of gamma rays on etching characteristics of CR-39 is also studied. Our results indicate that high gamma radiation doses significantly influence the response and etching characteristics of the dosimeter.
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