title: ESR of CO2- in X-irradiated tooth enamel and A-type carbonated apatite.
abstract: Using both low microwave power and weak magnetic field modulation, we have shown that the asymmetric signal arising in X-irradiated tooth enamel as well as in A-type carbonated apatite exposed to X-rays or to excited oxygen has an orthorhombic character and must be attributed to CO2-. Effectively, the mean values found for the three g-tensor components are comparable to those quoted for this defect in single-crystal specimens of calcite and sodium formate.
mesh_terms: D001031:Apatites / Q000032:analysis / Q000528:radiation effects*; D002254:Carbonates / Q000032:analysis*; D003743:Dental Enamel / Q000032:analysis / Q000528:radiation effects*; D004578:Electron Spin Resonance Spectroscopy; D006801:Humans; D008872:Microwaves
chemical_list: D001031:Apatites; D002254:Carbonates