Self-diffusion in liquid potassium
The natural line of the incoherent quasi-elastic neutron scattering law of liquid potassium has been obtained from experimental double-differential scattering cross-sections at the temperatures of 340, 440, and 550K for wavevectors transfers in the range of 0.27 < =Q < =1.13A exp -1 . The full...
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Published in | Journal of physics. Condensed matter Vol. 8; no. 20; pp. 3525 - 3536 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
13.05.1996
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Online Access | Get full text |
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Summary: | The natural line of the incoherent quasi-elastic neutron scattering law of liquid potassium has been obtained from experimental double-differential scattering cross-sections at the temperatures of 340, 440, and 550K for wavevectors transfers in the range of 0.27 < =Q < =1.13A exp -1 . The full width at half maximum of this line as a function of Q exp 2 has been analyzed on the basis of several diffusion models. It has been found that the self-diffusion process in liquid potassium has an individual and activationless character and can be approximately described by means of the mode-coupling theory at temperatures noticeably more than the melting point. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0953-8984 1361-648X |
DOI: | 10.1088/0953-8984/8/20/001 |