Fractional power time dependence of the nuclear magnetization in the presence of paramagnetic impurities

G. B. Furman, E. M. Kunoff, S. D. Goren, V. Pasquier, D. Tinet

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

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 languageEnglish
Pages (from-to)255-258
Number of pages4
JournalSolid State Nuclear Magnetic Resonance
Volume4
Issue number4
DOIs
StatePublished - 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

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