Measurements are reported of the change in the thermal conductivity coefficients ▵λ∥ and ▵λ⊥ of polar gases under the influence of a magnetic field at room temperature. Investigated are the linear molecules HCl, DCl, HCN, OCS and CO2 and the symmetric top molecules CH3F, CD3F, CH3CN,...

Experimental results are reported for the magnetic field influence on the thermal conductivity of CH3CN-Ar gas mixtures at various compositions for T = 300 K. The observed field dependence is analyzed in terms of the contributions from the W[J](2) and WJ polarizations.

For a polyatomic gas simple expressions have been derived for the thermal conductivity as well as for the variation of the thermal conductivity as a function of an external field. This has been achieved by using the total heat transport as a trial function in the kinetic theory instead of the...

Experimental results on the influence of a magnetic field on linear, spherical top and symmetric top molecules have been analyzed in terms of the kinetic theory based on the Waldmann-Snider equation. The traditional analysis on the basis of the two angular momentum polarizations W· and W ∧ J...

Rotational relaxation, related to the experimentally accessible volume viscosity, is described to the first order in the Sonine polynomial expansion of nonequilibrium distribution functions by the well known Wang Chang, Uhlenbeck, and De Boer expression. By a classical trajectory evaluation of a...

The magnetic field effect on the viscosity has been measured for several polyatomic gases with the emphasis on symmetric top molecules with strong electric dipoles. Theoretical expressions are given for the field dependent viscosity coefficients for various types of angular momentum...

An extensive body of experimental data is presently available on Senftleben-Beenakker and related effects for a variety of polyatomic gases. This data presents the theoretician with an opportunity to test approximations in kinetic theory, collision dynamics, and anisotropic intermolecular...

Under the influence of second-order gradients in the temperature, an anisotropy in the rotational angular momenta in a gas can be set up, giving rise to a birefringence. Preliminary measurements on this effect, called heat-flow birefringence, are reported. An interpretation of the results is...

Measurements are reported on the collisional broadening of the depolarized Rayleigh line and of the broadening and shift of the rotational Raman lines for nH2He, pH2He, nH2Ne, pH2Ne and nH2Ar. The measurements were carried out in the binary collision regime in the temperature...

Transport phenomena in molecular gases and the respective field effects have so far been analyzed in the hydrodynamic and Knudsen regimes. In between there is a rather large gap covered by the transition regime. For the case of heat conduction through a diatomic diamagnetic gas between parallel...