Method and apparatus for sample monitoring

Details Method and apparatus for sample monitoring Method and apparatus for sample monitoring

1993-12-30

1996-07-23

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324303, G01V 300

Patent

active

055393098

ABSTRACT:
Method and apparatus for monitoring a sample having `solid` and `liquid` content using a magnetic field generator and subjecting the sample to a static magnetic field in the first direction to cause the magnetic vectors of nuclei to precess about the first direction. Thereafter, the bulk magnetic vector of the sample is reoriented so as to gain a component in a plane orthogonal to the first direction and monitoring the resultant FID. A pulse sequence is then carried out that causes the spins of the nuclei to rephase and produce echoes from which the solid and liquid components of the sample can be defined.

REFERENCES:
patent: 4701705 (1987-10-01), Rollwitz
patent: 4714882 (1987-12-01), Nagayama
patent: 4789832 (1988-12-01), Nagayama
patent: 5235276 (1993-08-01), Lew
Composites Evaluation, Proc. of the Second Intern. Conf. on Testing, Evaluation and Quality Control of Composites-Teqc 22 Sep. 1987, Guildford, UK, pp. 23-27, G. A. Matzkanin et al. "NDE of Moisture Absorption in Composites Using Nuclear Magnetic Resonance".
Measurement and Control, vol. 22, No. 1, Mar. 1, 1989, London GB, pp. 54-55, L. Young, "Moisture Measurement Using Low Resolution Nuclear Magnetic Resonance".

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