利用空腔增强吸收光谱分析脉冲分子束。

IF 1.3 4区工程技术 Q3 INSTRUMENTS & INSTRUMENTATION

Review of Scientific Instruments Pub Date : 2024-11-01 DOI:10.1063/5.0227509

Zhuang Liu, Qian-Hao Liu, Cun-Feng Cheng, Shui-Ming Hu

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引用次数: 0

摘要

分子束在化学动力学实验中发挥着重要作用。在这些研究中，分子束中的密度是影响反应速率的关键因素之一。在此，我们提出了一种基于激光锁定空腔增强吸收光谱的方法来测量分子束中的分子密度。在分子束中测量了 CO 第二泛音带中的 P(1) 转变，证明了从吸收光谱中可以确定特定量子态的分子数量密度。这种非破坏性光谱方法可以测量分子束的状态分辨特性，可用于分子碰撞动力学等各种研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Profiling a pulsed molecular beam with cavity-enhanced absorption spectroscopy.

The molecular beam plays an important role in chemical dynamics experiments. The density in the beam is one of the critical factors influencing the reaction rate in these studies. Here we present a method based on laser-locked cavity-enhanced absorption spectroscopy to measure the molecular density in the beam. The P(1) transition in the second overtone band of CO was measured in the molecular beam, demonstrating a determination of the number density of molecules in a specific quantum state from the absorption spectrum. This non-destructive spectroscopic method allows the measurement of state-resolved properties of a molecular beam, which could be applied to various studies such as molecular collision dynamics.

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来源期刊

Review of Scientific Instruments 工程技术-物理：应用

CiteScore

3.00

自引率

12.50%

发文量

758

审稿时长

2.6 months

期刊介绍： Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.