Infrared Laser and Microwave Spectroscopy of Electric Discharges

摘要

The use of the electric discharge as a spectroscopic source in the laboratory goes back to the early part of this century. However, until twenty years ago most high resolution spectroscopy of molecules in discharges, particularly of short-lived species like free radicals and ions created and destroyed within the discharge itself, was confined to the optical region. Emission and absorption spectra were recorded with large grating spectrometers with resolving powers of > 5 x 10~5. Accurate structural parameters for ground and excited electronic states were obtained for many diatomic and triatomic species in this way.