Depolarized-light-scattering spectrum from gaseous hydrogen at 50 K: The density-squared component

The density-squared component of the depolarized-light-scattering spectrum of hydrogen at 50 K has been measured. This contribution is compared with the results of a theoretical model that considers both the wings of the rotational lines and the interaction-induced spectral components. The overall agreement is good, but some inconsistencies remain in the region between the rotational lines. Probable reasons for such a discrepancy are discussed.