Development of combination neutron dosemeter based on track detectors

The combination neutron dosemeter based on track detection using allyl diglycol carbonate plastic was developed. As the fast neutron detector the conventional track detector was used. For the thermal neutron detection Al-3% Li alloy was applied as a charged particle radiator. For the intermediate neutron detection Al-3% Li alloy was also used as the radiator and the detection element was covered by a polyethylene plate including 25% boron of 1 cm thickness which was applied for improving the dose-equivalent response over the wide neutron energy range. The response of the combination dosemeter was almost flat within the error of ±50% except the under response in the energy range of 3 keV-30 keV with the intermediate neutron detector and the over response in the energy range of 30 keV-200 keV with the fast neutron detector. (author)