Effects of Finite Gradient-Pulse Widths in Pulsed-Field-Gradient Diffusion Measurements
β Scribed by P.P. Mitra; B.I. Halperin
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 666 KB
- Volume
- 113
- Category
- Article
- ISSN
- 1064-1858
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π SIMILAR VOLUMES
Pulsed-field-gradient NMR techniques are demonstrated for measurements of time-dependent gas diffusion. The standard PGSE technique and variants, applied to a free gas mixture of thermally polarized xenon and O2, are found to provide a reproducible measure of the xenon diffusion coefficient (5.71 x
Over the past decade several pulsed field gradient stimulated-echo methods have been presented for diffusion measurements in heterogeneous media. These methods have reduced or eliminated the coupling between the applied magnetic field gradient and a constant internal magnetic field gradient caused b