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Self-Diffusion Coefficient of Liquid Lithium
Abstract
The coefficient of self-diffusion of 7Li in liquid lithium has been measured with nuclear magnetic resonance. The diffusion coefficient was determined from observations of the dependence of the spin-echo signal upon the amplitude of a pulsed magnetic field gradient. It is found that at the melting point D = 6.8 ± 0.3 × 10−5cm2 / sec and (T / D) (dD / dT) = 2.8 ± 0.3. In terms of an activation model, D = 0.94 ± 0.4 × 10−3 exp [ − (2300 ± 300cal) / RT]cm2 / sec. Resultsare compared with the Cohen–Turnbull free-volume model and the Ascarelli–Paskin dense-gas model for liquid diffusion. From the free-volume model, the effective hardsphere diameter is determined for Li and, in addition, for Na and K as well. The results compare favorably with effective hard-sphere diameters determined from neutron-scattering data.
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Citations
Cited by
Use of the Stimulated Echo in NMR Diffusion Studies
Tanner, J. E. (1970) · The Journal of Chemical Physics · doi:10.1063/1.1673336 · Cited by 1,645
Orientationally invariant indices of axon diameter and density from diffusion MRI
Alexander, D. C., Hubbard, P. L., Hall, M. G., Moore, E. A., Ptito, M., Parker, G. J. M., & Dyrby, T. B. (2010) · NeuroImage · doi:10.1016/j.neuroimage.2010.05.043 · Cited by 683
Quantifying brain microstructure with diffusion MRI: Theory and parameter estimation
Novikov, D. S., Fieremans, E., Jespersen, S. N., & Kiselev, V. G. (2019) · NMR in Biomedicine · doi:10.1002/nbm.3998 · Cited by 581
An analytical model of restricted diffusion in bovine optic nerve
Stanisz, G. J., Wright, G. A., Henkelman, R. M., & Szafer, A. (1997) · Magnetic Resonance in Medicine · doi:10.1002/mrm.1910370115 · Cited by 501
Molecular diffusion, tissue microdynamics and microstructure
Bihan, D. L. (1995) · NMR in Biomedicine · doi:10.1002/nbm.1940080711 · Cited by 497
Metadata
- Authors
- Murday, J. S., & Cotts, R. M.
- Venue
- The Journal of Chemical Physics
- Publisher
- AIP Publishing
- Published
- 1968-06-01
- Volume
- 48
- Issue
- 11
- Pages
- 4938-4945
- ISSN
- 0021-9606 (ISSN-L)
- 1089-7690
- OpenAlex
- W2060019728
- Cited by
- 365
- References
- 0
- FWCI
- 7.77
- Type
- journal article
- Language
- en
- Open access
- closed
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- Murday, J. S., & Cotts, R. M. (1968). Self-Diffusion Coefficient of Liquid Lithium. The Journal of Chemical Physics. https://doi.org/10.1063/1.1668160
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