Technique for amplitude alignment of NMR spectrometer using mult

Details Technique for amplitude alignment of NMR spectrometer using mult Technique for amplitude alignment of NMR spectrometer using mult

1992-03-30

1993-11-09

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, 324313, G01N 3320

Patent

active

052606546

ABSTRACT:
The quadrature channels of an RF generator in an NMR spectrometer are aligned relative to one another by applying pulse sets to pairs of channels that are 180.degree. out of phase. The effect of the pulses in one channel is the opposite of the pulses in the other channel. As a result, the magnetization of the sample returns to the direction in which it started when the amplitudes of the pulses applied to each channel are equal. The magnetization returns to the initial direction even in the presence of RF inhomogeneities. The characteristic magnetization pattern can be easily observed and used to adjust the relative pulse amplitudes equal and the absolute pulse amplitudes to .pi./2.

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