科研之友
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摘要
Microwave spectroscopy is suitable for studying chemically and physically very interesting molecular systems, including weakly bound complexes, radicals, ions, and other transient species. Information on molecular structure, internal motions and intermolecular interactions are easily obtained. Advances and techniques of microwave spectrometer are outlined in this article. The instruments developed, including microwave absorption spectrometer, pulsed nozzle Fourier transform microwave spectrometer and chirped pulse Fourier transform microwave spectrometer, etc. are described. Complimentary techniques in supersonic expansions, external applied fields with Stark modulation, fast scan, chirped pulse and double resonance are reviewed. Pulsed nozzles with heating system, fast-mixing, electric discharge and laser ablation are discussed. Meanwhile, the applications and developments of microwave spectrometers in the field of analytical chemistry are also reviewed. Finally, future trends of microwave spectrometers are prospected.
