抄録
Spectral profiles of Cd visible triplet lines, 2 5086, 4800, and 4678, emitted by several commercial lamps (Osram type) of various discharge currents, are observed by the use of a pressure scanning Fabry-Perot interferometer. Main results obtained are 1) the half-intensity width of each line increases linearly with discharge wattage (or approximately with current) from 23 to 37 VA (or from 1.0 to 1. 5A) by Toshiba lamps, and from 40 to 52 VA by Osram large lamps. Observed curves of each line are nearly identical for all lamps; 2) the rate of increase of the half-width is smaller in the order of λ 5086, 4800 and 4678. The line λ 5086 of many lamps undergoes self-reversal even when the lamps are used in the state of normal discharge. 3) the hyperfine structure of each line is analyzed through data obtained with a narrow spaced interferometer. Observed values of the satellite separation and the intensity ratio are in good agreement with those reported by Schrammen and by Imaizumi.
