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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Single-Source, Collinear Merged-Beam Experiment for the Study of Reactive Neutral-Neutral Collisions
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Single-Source, Collinear Merged-Beam Experiment for the Study of Reactive Neutral-Neutral Collisions

机译：单源，共线合并光束实验，用于研究反应中性 - 中性碰撞

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摘要

We present two methods for studying reactive collisions between two atomic or molecular species: a collinear merged-beam method in which two gas pulses from a single supersonic beam source are coalesced and an intrabeam-scattering technique in which a single gas pulse is used. Both approaches, which rely on the laser cooling and deceleration of a laser-coolable species inside a Zeeman slower, can be used for a wide range of scattering studies. Possible experimental implementations of the proposed methods are outlined for autoionizing collisions between helium atoms in the metastable 2(3)S(1) state and a second, atomic or molecular species. Using numerical trajectory calculations, we provide estimates of the expected on-axis detection efficiency, collision-energy range, and collision-energy resolution of the approaches. We have experimentally tested the feasibility of such an experiment by producing two gas pulses at very short time intervals, and the results of these measurements are also detailed.
机译：我们提出了两种研究两个原子或分子种类之间的反应碰撞方法：一种共线合并梁方法，其中来自单个超音梁源的两个气体脉冲聚结，并且使用了单个气体脉冲的内部散射技术。两种方法依赖于塞曼内部激光冷却和减速的激光冷却和减速，可用于广泛的散射研究。所提出的方法的可能实验实施方法对于亚稳定性2（3）S（1）状态和第二，原子或分子物种之间的氦原子之间的自动化碰撞。使用数值轨迹计算，我们提供了预期的轴上检测效率，碰撞 - 能量范围和方法的碰撞能量分辨率。我们通过在非常短的时间间隔产生两个气体脉冲来通过实验测试这种实验的可行性，并且这些测量结果也详细说明了这些测量结果。

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