simetry after Criticality Accidents Using Low-Frequency EPR: A Study of Whole Human Teeth Irradiated in a Mixed Neutron

In the context of accidental or intentional radiation expo-sures (nuclear terrorism), it is essential to separate rapidly those individuals with substantial exposures from those with exposures that do not constitute an immediate threat to health. Low-frequency electron paramagnetic resonance (EPR) spec-troscopy provides the potential advantage of making accurate and sensitive measurements of absorbed radiation dose in teeth without removing the teeth from the potential victims. Up to now, most studies focused on the dose–response curves ob-tained for g radiation. In radiation accidents, however, the con-tribution of neutrons to the total radiation dose should not be neglected. To determine how neutrons contribute to the appar-ent dose estimated by EPR dosimetry, extracted whole human teeth were irradiated at the SILENE reactor in a mixed neu-tron and g-radiation field simulating criticality accidents. Th