Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1979-12-28
1981-09-22
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324304, G01N 2700
Patent
active
042912725
ABSTRACT:
A method for line narrowing in nuclear magnetic resonance (NMR) studies in solids is described. The method employs quasi-continuous amplitude modulation of an rf field wherein the field is eliminated at intervals for short periods of time at or about the time when the amplitude for both the maximum and minimum approach zero, these intervals creating windows where the NMR signal can be observed.
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patent: 3968423 (1976-07-01), Hoshino
M. L. Lee et al., "Nuclear-Magnetic-Resonance Line Narrowing by a Rotating rf Field", Phys. Rev., vol. 140, No. A4, (1965), pp. 1261-1271.
C. Yannoni et al., "A New Coherent Averaging Effect in Magnetic Resonance Modulation-Induced Reduction of Dipolar Coupling", Phys. Rev. Letters, vol. 37, (1976), pp. 1230-1232.
Ellett et al., "Advances in Magnetic Resonance", vol. 5, J. S. Waugh, Academic Press, N.Y. (1971), p. 117-176 (Particular reference to "phase glitches" are on page 170 and are set forth in Section D3, pp. 142-147).
J. S. Waugh et al., Phys. Rev. Letters, vol. 20, No. 5, pp. 180-182 (1968).
Hofer Donald C.
Kendrick Raymond D.
Yannoni Costantino S.
International Business Machines - Corporation
Tokar Michael J.
Weins Michael J.
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