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On the signal-to-noise ratio of nuclear magnetic resonance oscillator spectrometers

M R Smith and D G Hughes

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General expressions are obtained for the amplitude noise and frequency noise of steady-state oscillators. The nmr signal-to-noise ratios in the am and fm modes are then calculated. It is found that fm detection of nmr signals is insensitive to 1/f oscillator noise. Some measurements of noise and signal-to-noise ratio are reported and are shown to be in agreement with theory.


PACS

07.50.Hp Electrical noise and shielding equipment

Subjects

Instrumentation and measurement

Dates

Issue 10 (October 1971)



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