Light Intensity and Frequency as Determinants in the Comparative Studies of Budde Effect and Joshi Effect

Abstract

The influence of frequency and intensity of light on the Budde
effect and the Joshi effect has been studied in chlorine admixed
with a little air and water vapour. It has been found that the Budde
effect increased with both the frequency and the intensity I of the
irradiating light. At a constant applied potential V, -% Δi  is a linear
function of the light frequency. At low V, -% Δi increases rapidly
with I and attains saturation at large I. It has been shown that the
Budde effect occurs due to the characteristic optical adsorption of
the gas and is discriminated from the Joshi effect which may be a
frequency or quantum effect rather than a consequence of the characteristic
optical adsorption in the gas phase.