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dc.contributor.author | Fatkullin N. | |
dc.contributor.author | Yatsenko G. | |
dc.contributor.author | Kimmich R. | |
dc.contributor.author | Fischer E. | |
dc.date.accessioned | 2018-09-17T21:11:57Z | |
dc.date.available | 2018-09-17T21:11:57Z | |
dc.date.issued | 1998 | |
dc.identifier.issn | 1063-7761 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/134660 | |
dc.description.abstract | A general theory of spin diffusion in condensed media is constructed by the method of Zwanzig-Mori projection operators using the superpositional approximation to decouple the many-particle correlation functions. The spin diffusion coefficient is expressed in the form Dsp =Dtf+Df, where Dtr. is the contribution associated with translational displacements of the molecules and Df is the contribution caused by intermolecular flip-flop processes. The expression for Dtr differs from the well-known Kubo-Green formula for the self-diffusion coefficient Dsd in that the integrand contains an additional factor Pf(t), which is the probability of the molecular spins not participating in intermolecular flip-flop transitions over the time t. A microscopic expression is obtained for Df in the form of a time integral of the intermolecular dipole-dipole dynamic correlation functions. For liquid-phase polymer system with fairly high molecular mass the condition Dsp≫Dsd is satisfied. © 1998 American Institute of Physics. | |
dc.relation.ispartofseries | Journal of Experimental and Theoretical Physics | |
dc.title | Theory of spin diffusion in liquid-phase polymer systems | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 2 | |
dc.relation.ispartofseries-volume | 87 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 294 | |
dc.source.id | SCOPUS10637761-1998-87-2-SID22444455217 |