Measurement of theAthinsp;3pgr;1ularr;Xthinsp;1Sgr;+gcontinuum absorptivity in Br2

摘要

Of the numerous attempts to decompose the visible absorption continuum of Br2into its three components,1pgr;1u,B3pgr;1urarr;X1J+g, most have neglected theAlarr;Xcontinuum. Although the intensity of the absorption continuum underlying theBlarr;Xlines can in principle be measured, extreme spectral resolution is required in order to separate the boundndash;bound spectrum from the bound free. For the present experiment, a simpler approach was taken using a tunable dye laser, the output of which was 3.5 W at 514 nm.