Abstract
ABSTRACT The behavior of the polymer CR-39 as a passive detector in the Wide Energy Range Rem Equivalent Personnel Neutron Dosimeter (PND) developed by us was studied and compared to that of polycarbonate (PC) foil. Chemical and electrochemical etching parameters for CR-39 in KOH solutions, unmixed and mixed with ethyl alcohol, were determined. The PND was irradiated with a 252 Cf source, with and without a D 2 O moderator. It was found that the use of CR-39 instead of PC increased the detection efficiency for α-particles by a factor of 3. The detection efficiency for neutrons was increased by a factor of 6.5 and 10, without and with a polyethylene radiator, respectively. The minimum detectable fast neutron dose could be lowered from 30 mRem with PC to 5 mRem by attaching a polyethylene radiator to the CR-39 foil. It was found that no significant improvement in the directional dependence was achieved by the use of CR-39 instead of the polycarbonate.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
