Spin diffusion in multiple pulse spin-locking in solids containing paramagnetic impurities

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Abstract

Spin diffusion and spinlattice relaxation in solids containing paramagnetic impurities under influence of a multiple-pulse spin-locking radio-frequency sequence are studied theoretically and experimentally. The diffusion equation obtained provides a clue for determination of the time dependent magnetization. The spinlattice relaxation time is calculated as a function of the correlation time and multiple-pulse field parameters. From the experimental data the spin diffusion coefficient, the radius of the spin diffusion barrier, and the correlation time for very slow molecular motion in polycrystalline (C 2F)n system are estimated and found to be D∼7.1×10-12cm2/s, rc∼4. 8×10-10m, and τc∼10.2μs, respectively.

Original languageEnglish
Pages (from-to)84-89
Number of pages6
JournalSolid State Nuclear Magnetic Resonance
Volume38
Issue number4
DOIs
StatePublished - 1 Nov 2010

Keywords

  • Multiple pulse spin locking
  • Spin diffusion

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