electron nuclear double resonance
Also found in: Acronyms.
electron nuclear double resonance[i′lek‚trän ¦nü·klē·ər ¦dəb·əl ′rez·ən·əns]
A type of electron paramagnetic resonance (EPR) spectroscopy permitting greatly enhanced resolution, in which a material is simultaneously irradiated at one of its EPR frequencies and by a second oscillatory field whose frequency is swept over the range of nuclear frequencies. Abbreviated ENDOR.