Tracer Diffusion Coefficient

2016 ◽  
Author(s):  
M. Kizilyalli ◽  
J. Corish ◽  
R. Metselaar
Keyword(s):  
Diffusion Coefficient ◽  
Tracer Diffusion ◽  
Tracer Diffusion Coefficient

scholarly journals Measurement of Tracer Diffusion Coefficient of Sulfur in Solid Calcium Sulfide by IMA

1979 ◽  
Vol 43 (12) ◽  
pp. 1181-1185 ◽  
Author(s):  
Takashi Otowa ◽  
Mutsuhiro Kobayashi ◽  
Kazuhiro S. Goto ◽  
Mayumi Someno
Keyword(s):  
Diffusion Coefficient ◽  
Tracer Diffusion ◽  
Calcium Sulfide ◽  
Tracer Diffusion Coefficient

scholarly journals Comparison of Polarographic Diffusion Current with that calculated using Tracer-Diffusion Coefficient

1972 ◽  
Vol 18 (5-6) ◽  
pp. 62-64
Author(s):  
Shigeo SAWADA ◽  
Kuniharu NISHIYAMA ◽  
Katsumi YOKOCHI ◽  
Makoto SUZUKI
Keyword(s):  
Diffusion Coefficient ◽  
Tracer Diffusion ◽  
Diffusion Current ◽  
Tracer Diffusion Coefficient

Oxygen nonstoichiometry, defect structure and oxygen diffusion in the double perovskite GdBaCo2O6−δ

2014 ◽  
Vol 43 (42) ◽  
pp. 15937-15943 ◽  
Author(s):  
D. S. Tsvetkov ◽  
M. V. Ananjev ◽  
V. A. Eremin ◽  
A. Yu. Zuev ◽  
E. Kh. Kurumchin
Keyword(s):  
Diffusion Coefficient ◽  
Double Perovskite ◽  
Tracer Diffusion ◽  
Oxygen Nonstoichiometry ◽  
Tracer Diffusion Coefficient ◽  
Self Diffusion ◽  
Polarization Technique ◽  
Dc Polarization ◽  
Oxygen Tracer ◽  
Self Diffusion Coefficient

The values of the oxygen self-diffusion coefficient measured by the dc-polarization technique completely coincide with those of the oxygen tracer diffusion coefficient.

Temperature dependence of tracer diffusion coefficients in polystyrene

1986 ◽  
Vol 1 (1) ◽  
pp. 202-204 ◽  
Author(s):  
Peter F. Green ◽  
Edward J. Kramer
Keyword(s):  
Molecular Weight ◽  
Diffusion Coefficient ◽  
Shear Rate ◽  
Temperature Dependence ◽  
Diffusion Coefficients ◽  
Tracer Diffusion ◽  
Tracer Diffusion Coefficient ◽  
Critical Molecular Weight ◽  
Tracer Diffusion Coefficients ◽  
Monomeric Friction Coefficient

The temperature dependence of the tracer diffusion coefficient D* of long deuterated polystyrene (d-PS) chains of molecular weight M>Mc, where Mc is the critical molecular weight for entanglement, diffusing into highly entangled PS matrices, each of molecular weight P = 2×107, is studied using forward recoil spectrometry. It is found that the temperature dependence of D*/T, reflected primarily in the monomeric friction coefficient, is accurately described by a Vogel equation. The constants that are used to fit these results are independent of M and are the same as those used to fit the temperature dependence of the zero shear rate viscosity of polystyrene.

A Thermogravimetric and NMR Study of β-Aluminas

1980 ◽  
Vol 35 (9) ◽  
pp. 951-954 ◽  
Author(s):  
Giorgio Flor ◽  
John L. Bjorkstam ◽  
Marco Villa
Keyword(s):  
Diffusion Coefficient ◽  
Lattice Relaxation ◽  
Lattice Relaxation Time ◽  
Tracer Diffusion ◽  
Spin Lattice Relaxation ◽  
Anomalous Temperature Dependence ◽  
Tracer Diffusion Coefficient ◽  
Anomalous Temperature ◽  
Spin Lattice ◽  
Nmr Study

Abstract The Na+ tracer diffusion coefficient and the 27Al NMR spin lattice relaxation time in Na β-alumina display an anomalous temperature dependence near 470 K. These phenomena are related to absorption of water which takes place when the temperature is decreased below 470 K. Water absorption processes in pure and partially substituted β-aluminas are studied by thermogravimetric analysis. Their effects upon conductivity are qualitatively discussed.

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