State of the Art of Electronic Personal Dosimeters for Neutrons
Symposium on radiation Measurements and Applications MICHIGAN (USA) - 21-23 mai 2002
Francesco d'Errico*, Marlies Luszik-Bhadra**, Thierry Lahaye***
*Yale University School of Medicine, Department of Therapeutic Radiology PO Box 208040, New Haven CT 06520-8040, and Dipartimento di Ingegneria Meccanica, Nucleare e della Produzione, Università degli Studi di Pisa, Via Diotisalvi 2, I-56126 Pisa, Italy;
**Physikalisch-Technische Bundesanstalt, Bundesallee 100,D-38116 Braunschweig, Germany;
***Institute for Radioprotection and Nuclear Safety (IRSN), F 92265 Fontenay aux Roses Cedex, France.
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 photons alone. A large research project is in progress to evaluate different methods currently available or under development for electronic personal dosimetry in mixed neutron-photon work-places. The study includes experiments in calibration fields as well as in representative work-places of the nuclear industry. This paper describes the commercial and laboratory systems under investigation and their response characteristics, which were determined so far with measurements with reference neutron fields. These were primarily carried out at the PTB in Braunschweig, Germany, with ISO standard monoenergetic beams up to 19 MeV.