Senftleben-Beenakker effect

Snider is best known for his paper reporting what is now referred to as the Waldmann-Snider equation.34 (L. Waldmann independently derived the same result via an alternative method.) The novelty of this equation is that it takes into account the consequences of the superposition of quantum wavefunctions. For example, while the usual Boltzmann equation describes the collisionally induced decay of the rotational state probability distribution of a spin system to equilibrium, the modifications allow the effects of magnetic field precession to be simultaneously taken into account. Snider has used this equation to explain a variety of effects including the Senftleben-Beenakker effect (i.e., is, the magnetic and electric field dependence of gas transport coefficients), gas phase NMR relaxation, and gas phase muon spin relaxation.35... 

Hermans L. J. F. (1992). Overview on experimental data from Senftleben-Beenakker effects, in Status and Future Developments in the Study of Transport Properties, eds. W.A. Wakeham, A.S. Dickinson, F.R.W. McCourt V. Vesovic, pp. 155-174. Dordrecht Kluwer. 

Contributions of second order in the "nonsphericity arising from one even and one odd basis function anisotropic in the angular momentum (in the notation of reference 30, W[Q]and for thermal conductivity, diffusion and thermal diffusion, and [Q]and [W]for the shear viscosity) are included. SEE denotes Senftleben-Beenakker effect. 

W.-K. Liu, F, R. McCourt, D. E. Fitz, and D. J. Kouri, Production and relaxation cross sections for the shear viscosity Senftleben-Beenakker effect. I. Formal expressions and their coupled-states and infinite-order-sudden approximations for atom-diatom systems, J. Chem. Phys. 71 415 (1979). 

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