Abstract

Variations in the sensitivity and spectral-response characteristics of a number of ultraviolet ion chambers have been investigated when the chambers are subjected either to temperature changes or to exposure to intense ultraviolet radiation. The main effect of an increase in temperature on the spectral response is found to be a shift to longer wavelengths of both the short and long wavelength limits of the spectral range; in all cases the larger shifts occur at the short wavelength limit, corresponding to temperature variations in the window transmission. The effects of irradiation are most serious for carbon disulphide filled chambers which rapidly deteriorate under simulated solar-ultraviolet conditions.

© 1967 Optical Society of America

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