G - Physics – 01 – R
Patent
G - Physics
01
R
324/1
G01R 33/46 (2006.01)
Patent
CA 1067576
Application for Patent of RICHARD R. ERNST for GYROMAGNETIC RESONANCE SPECTROSCOPY EMPLOYING SPIN ECHO SPIN SPIN DECOUPLING AND TWO-DIMENSIONAL SPREADING ABSTRACT OF THE DISCLOSURE A method of gyromagnetic resonance spectroscopy is disclosed which simplifies the resultant spectra by eliminating spin- spin coupling effects. The method is particularly useful for eliminating homonuclear spin-spin coupling effects. In the method, spin echo resonance of the resonators is obtained and the time elapsing between tipping of the resonators and detection of the resultant echo t1 is changed from one measure- ment to the next. The resultant echos are measured at equal intervals of time t2. Echo resonance data is Fourier trans- formed from the time domain into the frequency domain to obtain spectral data in-the frequency domain as a function of t1. A second Fourier transform of the resonance data is then effected to transform the spectral data into data which is a function of both .omega.1 and .omega.2 where .omega.1 and .omega.2 are each related to ? and ? respectively. The spectral data in the .omega.1 - .omega.2 plane is then projected at 45° to the .omega.2 and .omega.1 axes to derive spectral data free of spin-spin coupling effects. The data may also be projected perpendicular to and onto the .omega.1 axis to obtain a J coupling spectrum. -1-
278232
Na
Varian Associates
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