State of the art of electronic personal dosimeters for neutrons

Despite a widely recognised need, electronic devices for personal dosimetry of neutrons or mixed neutron–photon fields are still far less established than systems for photon or beta radiations. A large research project is in progress to evaluate different methods currently used or under development for electronic personal dosimetry in mixed neutron–photon fields. The study includes testing in calibration fields as well as in representative workplaces of the nuclear industry. This paper describes the commercial and laboratory systems under investigation and their response characteristics. These were determined so far with measurements using ISO standard monoenergetic beams up to 19 MeV at the PTB in Braunschweig, Germany.