Abstract

An improved version of a low-pressure hot cathode discharge lamp for use in the vacuum ultraviolet is described. It has been used with hydrogen, helium, argon, and nitrogen to furnish line radiation from below 500 A to about 1650 A and continuum radiation from hydrogen from 1650 A to 3500 A. The lamp operates at low voltages, is reliable, and simple to rejuvenate when the output becomes low. Figures are given on its output as seen through a specific monochromator.

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