Fast Scan Submillimeter Spectroscopy Technique (FASSST): A New Analytical Tool for the Gas Phase

Abstract

A new FAst Scan Submillimeter Spectroscopic Technique (FASSST) for analytical applications is described. It is based on voltage tunable Backward Wave Oscillators (BWOs), afast scan to 'freeze' frequency instability, and optical calibration methods. FASSST, due to its high resolution, is used to record the gas phase rotational spectra of mixtures of molecules (e.g. aromatic or heterocyclic compounds). This technique provides an unambiguous identification of the individual component compounds. The combination of FASSST with gas chromatography is expected to be an excellent method for qualitative and quantitative analysis.