The efficiency of a Raman tube for gases can be increased by multiple reflections from concave mirrors. With a four-mirror arrangement, the intensity of the scattered light entering the spectrograph is increased by the factor 1/(1−R), where R is the reflectivity of the mirrors. A two-mirror Raman tube is described, which gave a nearly fourfold increase in intensity in the ultraviolet.
No takes yet. Share an insight, caveat, or question.
Welsh et al. (1951) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: