Pulsed gas control for NMR spinner speed adjustment

Electricity: measuring and testing – Particle precession resonance – Spectrometer components

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Details

G01N 2402, G01R 3320

Patent

active

047060298

ABSTRACT:
A system for controlling the spin rate of a sample in an NMR spectrometer using an ON/OFF valve controlled by a digital system to regulate flow of a gas between a source and a sample spinner. A spin rate detector supplies rate information to the digital control. The digital control varies the ON/OFF valve duty cycle to control the spin rate.

REFERENCES:
patent: 3462677 (1969-08-01), Paitich
patent: 3873909 (1975-03-01), Ernst
patent: 3911355 (1975-10-01), Leane et al.
patent: 4305036 (1981-12-01), Ernst et al.
patent: 4581583 (1986-04-01), Van Vliet et al.

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