Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1988-09-06
1989-08-15
Levy, Stewart J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324308, G01R 3320
Patent
active
048578436
ABSTRACT:
The amplitude of specific spectroscopic components are measured by first finding their frequency in the presence of inhomogeneity. A large stable component, usually the water line, is used as a frequency standard to determine the amount of frequency shift in each voxel. The frequency standard is used to determine the relative frequencies of each of the desired spectroscopic components. In one approach the entire hydrogen spectrum is envelope detected with the beats between the water line and the spectroscopic components used to provide a stable spectrum, immune to inhomogeneity.
REFERENCES:
patent: 4329646 (1982-05-01), Tsuda
Arana Louis M.
Levy Stewart J.
Stanford University
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