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An Infrared Diode Laser Spectrometer for the Study of Jet Cooled Gases

机译:用于喷射冷却气体研究的红外二极管激光光谱仪

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摘要

We have constructed a tunable, high resolution, infrared diode laser spectrometer and combined it with a pulsed super- sonic jet expansion. A modified version of the Perry multipass cell has been incorporated into the spectrometer to increase the effective absorption path length. Performance capabilities of the spectrometer are evaluated by examining re-vibrational spec- tra for the carbon monoxide molecule in the five micron region of the infrared. From these measurements, an instrumental absorption sensitivity is determined. Finally, since one of our immediate goals is the infrared study of jet cooled transition metal carbonyls, were present high resolution data obtained by entraining the vapor above a solid metal carbonyl and injecting it into the pulsed jet expansion.
机译:我们构建了一个可调的,高分辨率的红外二极管激光光谱仪,并将其与脉冲式超声射流扩展相结合。派瑞多通滤池的改良版已加入光谱仪中,以增加有效吸收路径的长度。通过检查红外五微米区域中的一氧化碳分子的振动光谱来评估光谱仪的性能。根据这些测量,确定仪器的吸收灵敏度。最后,由于我们的近期目标之一是对射流冷却的过渡金属羰基进行红外研究,因此获得了高分辨率数据,该数据是通过将蒸汽夹带在固体金属羰基上方并将其注入脉冲射流膨胀中获得的。

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