Infrared-Microwave Double Resonance
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Since the double resonance effect in molecules was first observed in 1955 with an ammonia-beam maser at 24 GHz, it has been investigated as a tool for microwave and radiofrequency spectroscopy. The recent development of infrared lasers has made the infrared- microwave double resonance experiment feasible by using the vibration-rotation transitions in molecules. Previous works on double resonance were reviewed1 in 1971, and they are not shown in this paper.
KeywordsDouble Resonance Triple Resonance Microwave Spectroscopy Microwave Transition Infrared Transition
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