Abstract
We extend the theory of growth of the nuclear magnetization in the presence of paramagnetic impurities and the absence of spin diffusion to the case of multi-paramagnetic centers. We show that for short times after saturation pulses, the rate of growth of the magnetization is proportional to tα where t is the time and α = 1/3, 1/2 and 2/3 for one-, two- and three-dimensional systems, respectively. We also present experimental data for which the total time-dependent magnetization is proportional to exp[− (t/T1)α], which reduces to the above time dependence for short times.
Original language | English |
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Pages (from-to) | 255-258 |
Number of pages | 4 |
Journal | Solid State Nuclear Magnetic Resonance |
Volume | 4 |
Issue number | 4 |
DOIs | |
State | Published - 1 Jan 1995 |
Keywords
- Multi-paramagnetic centers
- Paramagnetic impurities
- Spin-lattice relaxation
ASJC Scopus subject areas
- Radiation
- General Chemistry
- Nuclear and High Energy Physics
- Instrumentation