Abstract
The electron-nuclear double resonance (ENDOR) method is applied to the study of the interaction of F-center electrons with the first two nuclear shells in NaCl, KBr, and NaH. From the angular dependence of single-crystal ENDOR spectra, values are obtained for the isotropic magnetic interaction constants and the principal values of the magnetic and electric-quadrupole interaction tensors in NaCl and KBr. ENDOR powder spectra are obtained and analyzed to obtain isotropic and anisotropic contributions to the magnetic interaction in NaH.