A High Repetition Rate 193 nm Excimer Laser for the Production of Reactive Cold Molecules

用于生产反应性冷分子的高重复率 193 nm 准分子激光器

• 批准号: 423014-2012
• 负责人: Jaeger, Wolfgang
• 金额: $ 10.85万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=495883
• 关键词: Repetition; Rate; 193; nm; Excimer

Helium nanodroplet isolation spectroscopy has become a versatile tool for the stabilization and study of unstable species. Even more remarkable is the use of helium droplets as nanoreactors. For this purpose, helium nanodroplets, which consist of several thousand up to several million helium atoms, can be doped with reactive species. At the very low temperature of 400 mK, a chemical reaction will occur if it is barrier-less or through a tunnelling mechanism if a low barrier exists or it can be photo-induced. We have developed a promising research program to study chemical reactions of atmospheric and astrophysical relevance using the method of helium nanodroplet spectroscopy. Of particular interest to us are reactions involving the OH radical, which plays a particularly important role as Earth's atmospheric "vacuum cleaner".

氦纳米三局分离光谱已成为稳定和研究不稳定物种的多功能工具。更引人注目的是将氦液滴用作纳米反应器。为此，可以用反应性物种将氦纳米圆锥体由数千多达数百万氦原子组成。在非常低的温度为400 mk的情况下，如果存在低阻挡层或可以拍摄光诱导的情况，则会发生化学反应，或者通过隧道机构进行化学反应。我们已经开发了一项有前途的研究计划，以使用氦纳米光谱法研究大气和天体物理相关性的化学反应。我们特别感兴趣的是涉及OH激进分子的反应，它作为地球大气“真空清洁剂”起着特别重要的作用。