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Full-Text Articles in Physics
Self Diffusion In Sodium Single Crystals, Aiyawar Rama Murthy
Self Diffusion In Sodium Single Crystals, Aiyawar Rama Murthy
Master's Theses
The diffusion coefficients of sodium tracers in single crystals of pure sodium were measured as a function of temperature over a range of 20-41oC. The relation D=Do exp (-Q/RT) was found with Q 11,000 +/- 170 cal/mole and Do 0.313 +/- 0.018 cm2/sec. These values may be compared with Q=10,450 cal/mole and Do=0.242 cm2/sec. reported for polycrystalline sodium.
Self-Diffusion Of Ions In Gels, Thomas Caldwell Smith
Self-Diffusion Of Ions In Gels, Thomas Caldwell Smith
Master's Theses
Radioisotope tracer techniques were used to determine the self-diffusion coefficients of the ions of sodium, potassium, cesium, chloride, bromide, and iodide in 3% agar gel, and the self-diffusion coefficient of the sodium ion in gelatin-agar gels at differing pH values of the gel.
The coefficients in agar gels were found to be in agreement with the Nernst equation for the diffusion coefficients of ions in aqueous solution. 'l'he diffusion coefficients in gelatin-agar gels were found to be higher in the presence of non-active NaCl than in its absence. The value of the coefficient was lower at the isoelectric point of …