The probability of lethal radiation effects as related to nuclear accident dosimetry data

Nuclear accident dosimetry is the most important source of data for the early diagnosis and prognosis of acute radiation sickness. The problem of the relationship between expected acute radiation effects (probability of death or recovery, LD50) and radiation dose (dose on the body surface measurable by personal dosimeters, depth dose distribution, dose to critical organs) is described for some typical radiation fields produced by catastrophic or accidental radiation events. For two different neutron plus gamma radiation fields the depth dose distribution was measured by DL-M4 chemical personal dosimeters. The diagnostic value (advantages, limitations) of the maximum tissue-equivalent total neutron plus gamma dose directly measured by personal dosimeters on the body surface is analysed by applying the Gozembuk-Keirim-Markus model of dose dependence of acute radiation effects