EPR spectroscopy of radiation-induced centers in tooth enamel and its application for retrospective dosimetry in Chernobyl case

A specific EPR tooth enamel dosimetry is discussed which appears to have ge nuine utility in retrospective dosimetry. The sample preparation technology , digital form of the native background and radiation-induced signals, and their separation from the experimentally observed spectrum are discussed. T he possibility of dose estimation from the single initial EPR spectrum of r andomly irradiated teeth and the uncertainty of such evaluation are discuss ed. The method has been used for dose reconstruction of a group of people i rradiated due to the Chemobyl accident, and some results are presented.