ENDOR study of irradiated tooth enamel

Abstract

and x-irradiated tooth enamel has been studied by EPR and ENDOR. Radiationinduced EPR spectrum of tooth enamel was found to be a superposition of signals with dominant contribution determined by CO 2 -radicals. Two types of these radicals were observed: ordered and disordered centers. EPR spectra of both CO 2 -centers are described by axial g -tensor with || g = 1.9975 and g = 2.0021 with c g || || .