Intensity measurement of laser-excited fluorescence in the B3Πu(0+)-X1Σg+ system of diatomic lodine

Fluorescence was excited in the B³Π_u(0⁺)-X¹Σ_g⁺ system of diatomic iodine by means of the 5145-Å line of an Ar⁺ laser and the 6328-Å line of a HeNe laser. The resulting spectrum was recorded on a SPEX double monochromator and a quantitative measurement of the intensities was carried out. The variation of the electronic transition moment $\text{M(}\text{R}\text{)}$ with R centroid observed by us shows a behavior similar to what has been reported earlier.