Methods of indicating nuclear spin density distribution

Details Methods of indicating nuclear spin density distribution Methods of indicating nuclear spin density distribution

1980-02-29

1982-03-02

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324300, G01N 2700

Patent

active

043180442

ABSTRACT:
Spin density distribution in a sample subjected to a static magnetic field along a y-axis is determined by subjecting the sample to an initial magnetic field gradient Gz to the static field together with a 90.degree. selective rf pulse to select a strip. The Gz gradient is then replaced by a filter gradient Gx for a limited period of time during which the free induction signal only partially decays and then immediately replacing the filter gradient by a read gradient Gy and then reading out the free induction decay signal. The sequence may be repeated cyclically with a delay between each cycle. (FIG. 4).

REFERENCES:
patent: 4021726 (1977-05-01), Garroway
patent: 4115730 (1978-09-01), Mansfield

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