Study of the B(O+u)→X(1Σ+g) system of Au2 and of the A(1Σ+u)→X(1σ+g) system of Ag2

Abstract In the present work the emission spectra of the B(O + u )→X( 1 Σ + g ) system of Au 2 and the A( 1 Σ + u )→X( 1 σ + g ) system of Ag 2 have been studied and the relative intensities of 28 bands of the first and 33 of the second are given. Internuclear potential, Franck—Condon factors and r -centroids have been calculated in order to study the variation of electronic transition moment vs r -centroid. Also, some features of rotovibrational populations of excited levels of these species in hollow-cathode discharge have been inferred.