Abstract
Low-temperature binary collision-induced light-scattering spectra from gaseous helium are reported. Both components, anisotropic and isotropic, are deduced from our measurements and calibrated on an absolute scale. Comparison of the experimental spectra with theoretical profiles computed quantum mechanically is made, by using as input up-to-date interaction potential and incremental polarizability functions. The present study confirms the tendencies we have previously observed at room temperature and strengthens our confidence in certain ab initio models.
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