Fast-neutron personnel dosimetry with solid-state track recorders

Aluminum-covered and cadmium-covered Solid-State Track Recorders (SSTR) consisting of pre-etched mica and asymptotically thick 235U foils have been used to monitor the fast-neutron dose received by personnel at the Zero-Power Reactor (ZPR) facilities (Argonne-East). Neutron spectra and absolute integral measurements were carried out at representative locations throughout the ZPR working environment. SSTR dosimeters were exposed at the same locations. Doses inferred from the SSTR data are compared to those derived from the measured neutron spectra or to doses determined with portable rem meters. On this basis, the applicability of the SSTR dosimetry method has been (conservatively) established.