Use of Spin Echoes in a Pulsed Magnetic-Field Gradient to Study Anisotropic, Restricted Diffusion and Flow
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- E. O. Stejskal
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin and Central Research Department, Monsanto Company, St. Louis, Missouri
抄録
<jats:p>The Bloch—Torrey equations are modified to include the case of anisotropic, restricted diffusion and flow. The problem of solving these modified equations for the amplitude of a spin echo in a time-dependent magnetic-field gradient subject to restricting boundary conditions is discussed. This problem is solved for a number of selected cases. In particular, it is found that a magnetic-field gradient applied in short, intense pulses is effective in defining the time during which nuclear displacements take place. A simplified equation, suitable for the pulsed-gradient experiment, is presented and solved for two different examples of systems showing restricted diffusion. A procedure for analyzing the data from pulsed-gradient measurements is suggested, and its merits are discussed. Suggestions are made of systems which may well be expected to show restricted, anisotropic diffusion or interesting flow properties.</jats:p>
収録刊行物
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- The Journal of Chemical Physics
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The Journal of Chemical Physics 43 (10), 3597-3603, 1965-11-15
AIP Publishing
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詳細情報 詳細情報について
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- CRID
- 1363951793571678080
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- NII論文ID
- 30015720675
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- ISSN
- 10897690
- 00219606
- http://id.crossref.org/issn/00219606
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- データソース種別
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- Crossref
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