Dual Purpose Nuclear Magnetic Resonance and Nuclear Quadrupole Resonance Spectrometer

Abstract

A technique is described for converting a single coil, wide line NMR spectrometer into a dual purpose nuclear magnetic resonance and nuclear quadrupole resonance spectrometer. The nuclear quadrupole resonance spectrometer uses a coherent, self-detecting, self-quenching, superregenerative Colpitts oscillator. The quench frequency is varied by changing the resistance between the control grid and ground. The nuclear quadrupole resonance spectrometer described is applicable to the study of internal motions in solids, which requires information on both the change in the quadrupole resonance frequency and line width.