Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1993-03-03
1995-03-14
Arana, Louis
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324315, G01V 300
Patent
active
053979877
ABSTRACT:
A magnetic resonance analyzing apparatus includes a sampling region; a first temperature stabilization assembly for maintaining the sampling region at a predetermined temperature; a magnet for applying a base magnetic field to the sampling region; a coil for applying a first 0.degree. phase excitation pulse to the sampling region at a first time, and a second 90.degree. phase offset excitation pulse to the sampling region at a second time corresponding substantially to an end of a first time period during which an output signal emitted from the sample as a result of the first excitation pulse can not be detected; a detector for detecting the output signal in response to the excitation pulses; a computer for forming a free induction decay (FID) curve from the output signal, starting from a third time corresponding substantially to an end of a second time period during which an output signal emitted from the sample as a result of the second excitation pulse can not be detected, separating the FID curve into a Gaussian (crystallinity) curve, exponential (amorphous) curve, and intermediate (combination of crystallinity and amorphous) curve, and determining a characteristic of the sample in correspondence with y-axis intercepts of at least one of the Gaussian, exponential, intermediate and FID curves; and a second temperature stabilization assembly for controlling the temperature of the sample at the predetermined temperature prior to entering the sampling region.
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Arana Louis
Rheometrics, Inc.
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