Cold Reactive Collisions

冷反应碰撞

• 批准号: 1265905
• 负责人: Jonathan Weinstein
• 金额: $ 32万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1265905&HistoricalAwards=false
• 关键词: Cold; Reactive; Collisions

This experimental physics research program explores the underlying structure and interactions of molecular matter in new, unexplored regimes. This award will support the continuation of research investigating helium-based diatomic molecules. Helium is the most chemically inert of all the atoms, but not so inert that it cannot form molecules. Very few measurements have been made of the properties of these elusive "van der Waals" molecules. Their structure and formation will be studied spectroscopically, providing an understanding of matter in this extreme weakly-bound limit. In addition, the award will support a continuation of research investigating molecular collisions and chemical reactions at a temperature of one degree above absolute zero. This "cold chemistry" is important for understanding the fundamental physics underlying chemical reactions, and provides more sensitive tests of theory than traditional "hot" chemistry.The research will improve our understanding of the structure and chemical reactions of molecular matter, the primary form of all matter on earth. As such, it may one day lead to new methods of controlling chemical reactions and chemical synthesis. In addition, the study of reactions at cold temperatures will improve our understanding of the interstellar medium. Graduate and undergraduate students will be trained in state-of-the-art optical techniques, as well as cryogenics, vacuum, electronics, and computer-based data acquisition and analysis.

该实验物理研究项目探索了新的、未经探索的体系中分子物质的基本结构和相互作用。 该奖项将支持继续研究氦基双原子分子。 氦是所有原子中化学惰性最强的，但也没有惰性到无法形成分子的程度。 对这些难以捉摸的“范德华”分子的特性进行的测量很少。 它们的结构和形成将通过光谱研究，提供对这种极端弱束缚极限下物质的理解。 此外，该奖项还将支持继续研究在绝对零以上一级温度下的分子碰撞和化学反应。 这种“冷化学”对于理解化学反应的基础物理非常重要，并且比传统的“热”化学提供了更灵敏的理论测试。这项研究将提高我们对分子物质（地球上所有物质的主要形式）的结构和化学反应的理解。 因此，有一天它可能会带来控制化学反应和化学合成的新方法。 此外，对低温反应的研究将增进我们对星际介质的理解。 研究生和本科生将接受最先进的光学技术以及低温、真空、电子和基于计算机的数据采集和分析的培训。