摘要:

The Hall Effect is measured in the molten ionic salts CuCl, AgCl and AgBr. Values of 0.023, 0.031 and 0.027 cm2/volt sec are obtained for the effective mobility. The values obtained are one or two orders of magnitude larger than drift mobilities and so indicate there can be no correspondence between Hall and drift mobilities in molten salts. These measurements appear to be the first of the Hall Effect in molten ionic salts

ISSN:0031-9104    

DOI:10.1080/00319107208084093

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

A recently developed capillary method has been employed to study tracer self-diffusion in liquid Na (102 to 284°C) and K (97 to 284°C). The results may be expressed byD=D0exp(-Q/RT), where 103DoNa= 0.86 (+0.09, −0.08) (cm2/sec),QNa=2.22 ±0.08 (kcal/mole), 103DOK= 0.76 (+0.06, −0.05), andQK= 2.02 ± 0.07. The reexamination of electrotransport data for Rb (60 to 230°C) yielded the self-diffusion data 103DORb= 0.66 (+0.11, −0.09) andQRb= 1.98 ± 0.16. For liquid Li, the results of two investigations (195 to 440°C) have been combined, yielding 103DOL1= 1.44 (+ 0.07, −0.06) andQL1= 2.87 ± 0.07

ISSN:0031-9104    

DOI:10.1080/00319107208084094

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

There has been measured heat conductivity of PbTe up to 1350° and PbSe up to 1500°K. The investigations were carried out by using the flat layer method and the coaxial cylinders method. The relative error of the measurements did not exceed 10%. The contribution of separate components into the total heat conductivity was determined by calculation. There has been found a considerable deviation from the Wiedemann-Franz law in caseLexpof PbTe melt equals approximately 0.5 Lo(Sommerfeld Lorentz number)

ISSN:0031-9104    

DOI:10.1080/00319107208084095

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

A spectral analysis is presented to investigate the onset of the convective instability in a fluid subject to a linear temperature gradient. The hydrodynamic theory is developed for the case of a binary system, where the concentration of one of the components is small. Therefore the present results will be applicable to the case of a Brownian system. We consider exclusively those modes which correspond to the central components of the spectral distribution, i.e., the diffusion mode and the thermal diffusivity mode. One finds that those modes are effected by the presence of the external temperature gradient in such a way that the spectrum of the scattered light should exhibit an important narrowing of the thermal diffusivity peak and a slight narrowing of the diffusion peak when approaching the convective instability critical point. Only the thermal diffusivity mode is affected in the limit of a pure fluid

ISSN:0031-9104    

DOI:10.1080/00319107208084096

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor