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The inverse operator technique for the solution of the linearized Waldmann-Snider equation in first order Chapman-Enskog-approximation is used to calculate non-equilibrium rotational angular momentum polarizations caused by a temperature- or a velocity gradient. The presence of an external homogeneous magnetic or electric field is taken into account. In particular, the viscom agnetic vector- and tensor polarization for linear molecules and the thermoelectric vectorand tensor polarization for polar symmetric top molecules are treated. Detailed expressions are given in terms of Waldmann-Snider collision cross sections. While for the tensor polarizations the self-adjoint part of the collision operator gives the major contribution, the vector polarizations occur due to the existence of a non-selfadjoint part.

Kinetic Theory of Nonequilibrium Alignment Phenomena in Dilute Polyatomic Gases in External Magnetic and Electric Fields