Abstract
As an extension to previous measurements on absorption coefficients-of ozone in the vacuum ultraviolet, similar measurements have been made in the near ultraviolet from the overlapping region at 2000A up to about 3500A and in the visible from about 4000–7500A. The absorption coefficient measurements were made using ozone gas obtained by direct vaporization from liquid ozone of high purity (at least 90–95 percent) and the optical densities measured with a Cary recording spectrophotometer with a 10-cm quartz absorption dell. The method is essentially different from those used by previous investigators, e.g., photoelectric detectors instead of photographic, pure ozone instead of ozonized oxygen, and the absorption cell located at the exit slit instead of between the light source and entrance slit. The absorption coefficients obtained are somewhat consistently lower than those previously reported by Ny and Choong, hitherto considered the most reliable.
© 1953 Optical Society of America
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