Nuclear magnetic resonance spectrometer

Details Nuclear magnetic resonance spectrometer Nuclear magnetic resonance spectrometer

1984-06-11

1986-12-09

Kreitman, Stephen A.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324307, G01R 3320

Patent

active

046282637

ABSTRACT:
A nuclear magnetic resonance spectrometer includes a device for sensing the angular position of the sample tube and a device for adding up the free induction decay signals. The RF pulses are applied to the sample according to the output signal from the sensing device when a certain location of the sample tube is at a first specific position and also when the certain location is at a second position diametrically opposite to the first position. The two free induction decay signals obtained in this way are added up by the adding device to prevent occurrence of peaks, known as spinning sidebands, at positions shifted from the peaks of an NMR spectrum by integral multiples of the rotational frequency of the sample when the axis of rotation of the sample tube does not coincide with the central line of the sample.

REFERENCES:
patent: 3462677 (1969-08-01), Paitich
patent: 3593136 (1971-07-01), Chapman et al.
patent: 4301410 (1981-11-01), Wind et al.
patent: 4475084 (1984-10-01), Moore et al.
patent: 4516074 (1985-05-01), Sugimoto

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