首页> 外文期刊>The Journal of Chemical Physics >LASER INDUCED FLUORESCENCE MEASUREMENTS OF MICROWAVE STIMULATED OH MOLECULES FROM H2O PHOTODISSOCIATION
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LASER INDUCED FLUORESCENCE MEASUREMENTS OF MICROWAVE STIMULATED OH MOLECULES FROM H2O PHOTODISSOCIATION

机译:激光诱导的H2O光解离微波激发的OH分子荧光测量

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摘要

Laser induced fluorescence of microwave stimulated OH molecules from H2O photodissociation is investigated as a first step in a series of laboratory experiments to understand features of astronomical OH masers. The inversion between the Pi(3/2), J=7/2 Lambda-doublet states of OH generated via photodissociation of cold H2O at 157 nm is shown to be 1.8:1. Within a microwave, Fabry-Perot cavity tuned to the resonance of one of the main hyperfine transitions in this Lambda doublet it is possible to stimulate all inverted OH molecules. The linewidth of the two main microwave transitions is measured as a function of the microwave power and interaction time. The results show that Doppler broadening is negligible at short interaction times of the molecules with the microwave field. (C) 1996 American Institute of Physics. [References: 9]
机译:作为一系列实验室实验的第一步,研究了由H2O光解离产生的微波刺激的OH分子的激光诱导荧光,以了解天文OH物质的特征。通过在157 nm处冷H2O的光解离生成的OH的Pi(3/2),J = 7/2 Lambda-doublet状态之间的反演为1.8:1。在微波中,将Fabry-Perot腔调谐至此Lambda双峰中主要超精细跃迁之一的共振,可以刺激所有倒置的OH分子。根据微波功率和相互作用时间来测量两个主要微波跃迁的线宽。结果表明,在分子与微波场的短相互作用时间内,多普勒增宽可以忽略不计。 (C)1996年美国物理研究所。 [参考:9]

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