Abstract
A new approach to the NMR relaxation theory for a system of magnetic spheres (sufficiently big spherical molecules) is presented. In this paper the NMR spin-lattice relaxation time T1 and spin-spin relaxation time T2 are calculated for nuclear spins I→j, taking into account intermolecular dipole-dipole interactions between the spins I→j, and spins S→k in the magnetic spheres. By an expansion of the dipole-dipole interaction in a series of spherical harmonics, it is possible to separate spatial variables of the interacting spins in a laboratory frame. A simultaneous effect of isotropic rotational and translation diffusion of the spins and relaxation rate of spins S→k is also taken into account.
Original language | English |
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Pages (from-to) | 302-311 |
Number of pages | 10 |
Journal | Physica B: Condensed Matter |
Volume | 328 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - May 2003 |
Keywords
- Diffusion
- Macromolecules
- NMR relaxation
- Solution
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics