A bi-symmetric square wave Zeeman modulator for nuclear quadrupole resonance.

D Mao, G L Petersen, P J Bray

Index: Solid State Nucl. Magn. Reson. 1(4) , 227-30, (1992)

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Abstract

A simple circuit has been designed to generate a bi-symmetric square wave Zeeman modulation for the detection of nuclear quadrupole resonance. The square waveform not only provides an optimum result among bi-symmetric modulation waveforms, but also allows the observation of the Zeeman perturbed NQR powder pattern without the need for an extra external magnetic field.