Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1992-05-28
1994-02-08
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
G01R 3300
Patent
active
052851567
ABSTRACT:
A method for measuring cross-relation rates in high-resolution nuclear magnetic resonance (NMR) spectroscopy in which in a homogeneous static magnetic field B.sub.0 in a direction of a z-axis which causes alignment of longitudinal components I.sub.Z.sup.A, I.sub.Z.sup.X of magnetization vectors I.sup.A, I.sup.X of nuclei A, X during a time interval .tau..sub.m a sample substance, preferably dissolved in liquid, with nuclei A and X having different chemical shifts .OMEGA..sub.A and .OMEGA..sub.X is irradiated with a radio-frequency (rf) field and afterwards by action of a suitable rf-pulse sequence the longitudinal magnetization is transferred into a transverse magnetization creating a rf-signal received by a detector, is characterized in that the rf field is composed by at least two weak, selective component fields, the frequencies of these fields being chosen such that the magnetization vectors I.sup.A and I.sup.X are made to nutate in synchronous fashion, the remaining spins of the sample substance substantially being unaffected by this process.
REFERENCES:
patent: 3714551 (1973-01-01), Pajak et al.
patent: 3795856 (1974-03-01), Keller
patent: 3975675 (1976-08-01), Dunard et al.
patent: 4238735 (1980-12-01), Mullet
patent: 4345207 (1982-08-01), Bertrand et al.
Chemical Physics Letters vol. 165 No. 6 p. 469 (Feb. 2, 1990) Lyndon Emsley & Geoffrey Bodenhausen.
Journal of Magnetic Resonance vol. 82 p. 211 (1989) Lyndon Emsley & Geoffrey Bodenhausen.
Journal of Magnetic Resonance vol. 89, No. 3 p. 620 (1990) Susan M. Holl et al.
Bodenhausen Geoffrey
Burghardt Irene
Konrat Robert
Vincent Sebastien
Hackler Walter A.
Spectrospin AG
Tokar Michael J.
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