Self-diffusion coefficients of TBBA : comparison between neutron and NMR results
- 1 January 1979
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 40 (22) , 583-586
- https://doi.org/10.1051/jphyslet:019790040022058300
Abstract
The average self-diffusion coefficients have been measured by neutron quasi-elastic scattering using the back-scattering technique, in the smectic A, nematic and isotropic phases of TBBA. The results are compared with previous neutron and NMR results. We find that the agreement is good for the smectic A and isotropic phases only. We deduce that the NMR results are probably incorrect for the nematic phase. A simple model for self-diffusion in the smectic A and nematic phases which satisfactorily fits our results is also presentedKeywords
This publication has 6 references indexed in Scilit:
- Neutron incoherent scattering law for diffusion in a cosine potential in one dimension: Application to self-diffusion in smectic phasesMolecular Physics, 1978
- Nuclear Magnetic Relaxation and Self Diffusion in a Series ofp-Alkanoyl-Benzylidene-P'-AminoazobenzenesMolecular Crystals and Liquid Crystals, 1977
- Self diffusion coefficients of TBBAJournal de Physique, 1977
- Neutron quasi-elastic scattering study of translational motions in the smectic h, c and a phases of tbbaJournal de Physique Lettres, 1975
- Anisotropy of Self-Diffusion in the Smectic-and Smectic-PhasesPhysical Review Letters, 1974
- Anisotropy of the self-diffusion tensor in nematic MBBASolid State Communications, 1974