Intercomparison of Personnel Dosimetry for Thermal Neutron Dose Equivalent in Neutron and Gamma Ray Mixed Fields

Abstract

In order to consider the problems concerned with personnel dosimetry, an Intercomparison of personnel dosimetry, especially dose equivalent responses of personnel dosimeters to thermal neutron, was carried out in neutron and gamma ray mixed fields.
The dose equivalent responses and their standard deviations of individual dosimeter were almost independent on cadmium ratio and gamma ray contamination in the radiation fields. However, a difference of about 4 times was observed among the relative thermal neutron dose equivalents of individual dosimeter normalized to the ICRP recommended value.
It is suggested that the standardization of dose evaluation method is required from the practical point of radiation protection and safety.