Gyromagnetic resonance spectroscopy employing spin echo spin-spi

Details Gyromagnetic resonance spectroscopy employing spin echo spin-spi Gyromagnetic resonance spectroscopy employing spin echo spin-spi

1976-05-13

1978-01-10

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 5R, G01R 3308

Patent

active

040681610

ABSTRACT:
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 t.sub.1 is changed from one measurement to the next. The resultant echos are measured at equal intervals of time t.sub.2. Echo resonance data is Fourier transformed from the time domain into the frequency domain to obtain spectral data in the frequency domain as a function of t.sub.1. 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..sub.1 and .omega..sub.2 where .omega..sub.1 and .omega..sub.2 are each related to 1/t.sub.1 and 1/t.sub.2, respectively. The spectral data in the .omega..sub.1 -.omega..sub.2 plane is then projected at 45.degree. to the .omega..sub.2 and .omega..sub.1 axes to derive spectral data free of spin-spin coupling effects. The data may also be projected perpendicular to and onto the .omega..sub.1 axis to obtain a J coupling spectrum.

REFERENCES:
patent: 3529235 (1970-09-01), Day
patent: 3648156 (1972-03-01), Parker
patent: 3651396 (1972-03-01), Hewitt
patent: 3968424 (1976-07-01), Ernst

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