NMR relaxometry: Spin lattice relaxation times in the laboratory frame versus spin lattice relaxation times in the rotating frame

Abstract : Relaxometry dispersion curves display the spin lattice relaxation rate as a function of the measurement frequency. However, as far as proton NMR is considered, dispersion curves usually start around 5 kHz and thus miss the very low frequency region. This gap can be filled by the measurement of the spin-lattice relaxation rate in the rotating frame. The issue of connecting both relaxation rates is considered for two relaxation mechanisms: i) randomly varying magnetic fields, ii) dipolar interaction within a system of two equivalent spins. Appropriate data processing is presented and the random field mechanism turns out to be adequate.
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Chemical Physics Letters, Elsevier, 2010, 495, pp.287 - 291. 〈10.1016/j.cplett.2010.06.064〉
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Emilie Steiner, Mehdi Yemloul, Laouès Guendouz, Sébastien Leclerc, Anthony Robert, et al.. NMR relaxometry: Spin lattice relaxation times in the laboratory frame versus spin lattice relaxation times in the rotating frame. Chemical Physics Letters, Elsevier, 2010, 495, pp.287 - 291. 〈10.1016/j.cplett.2010.06.064〉. 〈hal-01482058〉

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