Nuclear magnetic resonance apparatus with a magnet of permanent

Details Nuclear magnetic resonance apparatus with a magnet of permanent Nuclear magnetic resonance apparatus with a magnet of permanent

1984-10-19

1987-01-27

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

335306, 324318, G01R 3320

Patent

active

046396730

ABSTRACT:
The disclosed nuclear magnetic resonance apparatus has a permanent magnet formed by laterally magnetized bars which are rotatable around their longitudinal axis. If the bars have a circular cross-section, all bars in the magnet system are identical and only the magnetization direction of each bar needs to be matched to the magnetization direction required at the relevant position. If the direction of magnetization in the system satisfies .alpha.=2 .phi. at all times, where .alpha. is the magnetization direction and .phi. the polar coordinate of the relevant bar, efficient use is made of the magnetic material and, in contrast to other magnetization directions, it is possible to work without a return yoke.

REFERENCES:
patent: 4538130 (1985-08-01), Gluckstern
patent: 4549155 (1985-10-01), Halbach

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