Design of a single coil double resonance NMR probe for combined magic angle spinning double resonance experiments

Abstract

A design of the r.f. circuitry for a single coil double resonance NMR probe is presented. The design is useful for NMR double resonance experiments at two widely separated frequencies. The design is characterized by relatively high power efficiency, high isolation between the two frequencies used, and excellent signal-to-noise ratios for the detected NMR frequency. Using this design, most single frequency probes can be easily modified for double resonance experiments.