Abstract
Argon, krypton, and xenon rare gas continuum light sources have been developed which are suitable for photoelectric scanning in the vacuum ultraviolet. Intense continuum light sources are required for many applications, including study of discrete absorption spectra. The argon, krypton and xenon continua have maximum intensities at about 1270, 1500, and 1650 Å respectively. Together with the intense Hop field helium continuum which we have earlier produced by similar techniques, these continua provide overlapping coverage of the 580–2000 Å wavelength region at bandwidths of at least 0.25 Å. The continua are excited with a mild condensed discharge which is controlled by a hydrogen thyratron modulator developed for this purpose. A 2.2m normal incidence monochromator equipped with a sodium salicylate-photomultiplier detector was used. Optimum conditions for producing these continua, details of the instrumentation, and typical recorder scans will be discussed.
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