Fourier-transform Emission Spectroscopy of Molecular Transitions in the Near-Infrared

Abstract

Emission spectra of transitions from low-lying metastable electronic states of diatomic radicals have been studied in the NIR region with high-resolution BOMEM or BRUKER Fourier- transform spectrometers. Different groups of radicals and types of transitions have been studied, - a1Δ(g)→X3Σ-(g) and b1Σ+(g)→X3Σ-(g) transitions of radicals of the O2/NH/NF family, - a3Σ-(u)(a11(u))→X1Σ+(g)(X0+(g)) transitions of group VA diatomics (BiN, BiP, BiAs, BiSb, Bi2, Sb2), - transitions between the fine structure components of widely split X2Π or x3ς ground states of metal hydrides, halides and chalcogenides (BiH, BiX, BiY, TeH, TeX, PbX; X=F,Cl,Br,I; Y=O,S,Se).