Abstract
The laboratoire de dosimetrie of the Centre de Radioprotection et de Sureté (CRS), Algiers, has been developing a fast neutron personal dosemeter using CR-39 detectors. Among track etch detectors used today, CR-39 remains the best available personal dosemeter for neutrons. Unfortunately, the drawbacks in using CR-39 as a neutron detector still exist especially the poor angular response of the flat dosemeter, the background reproducibility and the ageing of commercially available CR-39 materials. The response of the dosemeter using flat and cylindrical geometry, has been investigated using Cf-252 neutrons and neutrons beams of energies ranging from 144 keV up to 14.7 MeV at different angles of radiation incidence, i.e. 0°, 30° and 60°.
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