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Notizen: The Effect Reciprocal to Flow Birefringence in Cases

Flow birefringence in molecular gases is due to a collisional alignment (tensor polarization) of the rotational angular momentum of the molecules in the presence of a gradient of the flow velocity. The reciprocal phenomenon is an anisotropy of the velocity distribution caused by an externally maintained tensor polarization. The kinetic theory of this new effect is presented and methods for its experimental detection are indicated.