Abstract:
Flow birefringence measurements have been performed for several linear molecules between 90 and 293 K. From a comparison with viscomagnetic effect data, information is obtained about the scalar factor of the angular momentum polarization present in viscous flow, of which only the tensorial factor had been determined. Experiments on hydrogen isotopes, for which only one rotational level is excited, confirm the assumption that the polarization does not depend on the translational energy.