Reactor neutron detection using activation and fission fragment track detectors

The aim of the present experimental investigation is to examine the used mica and plastic samples not only as solid state nuclear track detectors but also as activation detectors. Experimental results showed that mica contains U (3 x 10-8) and Sc (2 x 10-4) by weight as impurities and the plastic sample used contains Zn (4 x 10-4) by weight. Mica and plastics are recommended for neutron fluence measurements (up to 1021 n/cm2) and for flux mapping around the core centre of the reactor using the activation technique. (Auth.)