A PROTOTYPE PERSONAL NEUTRON DOSEMETER BASED ON AN ION CHAMBER AND DIRECT ION STORAGE

摘要

Ionisation chambers are sensitive to both neutrons and photons. In order to produce a neutron dosemeter based on an ion chamber a dobule-chamber system which allows for differential readings has to be built. The system consists of one chamber with high neutron sensitivity (e. g. A-150 or polyethylene with 10~B ro 6~Li compounds) and one chamber with low neutron sensitivity (e. g. graphite or Teflon~TM). Different combined dosemeter prototypes were produced and their responses for standard photon and neutron radiation fields, as well as various field spectra, were determined.