Integrated absorbtion by the 9.6 μ band of ozone

An account is given of laboratory measurements of absorption by the 9.6 μ band of ozone using dry air as the foreign gas. The experimental results for the band area, Ar, are tabulated for ozone amounts up to 1.5 cm STP and pressures from 10 to 760 mm Hg at a temperature of 20°C; the slit width is 6.5 cm−1. An empirical formula for Ar is given. The best fit is obtained with slightly modified values of the ultra‐violet absorption coefficients determined by Vigroux (1953), when the standard error in band area is 2.4 per cent.