Comparison of emission spectra of CuCl 2 obtained via energy transfer from O 2( 1Δ g) with laser-induced fluorescence spectra

Abstract

Red and infrared (≈8000 cm −1) emission was recorded from a flame produced by Cl 2 and O 2( 1Δ g) in the presence of hot copper, and from CuCl 2 excited directly by O 2( 1Δ g). We note similarities between these spectra and an infrared absorption spectrum of CuCl 2. Laser-induced fluorescence spectra of CuCl 2 ( 2Π− 2Π g) were excited using the red lines of a krypton-ion laser, and recorded at high resolution on a Fourier-transform spectrometer. A preliminary analysis of the series of rotational doublets observed gives T e≈15800 cm −1 for the 2Π u state and a well depth for 2Π g greater than 4300 cm −1.