Spectroscopy and Dynamics of Molecules Isolated in Liquid Helium Droplets

液氦液滴中分离分子的光谱学和动力学

• 批准号: 9817841
• 负责人: Kenneth Janda
• 金额: $ 46.36万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-01 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9817841&HistoricalAwards=false
• 关键词: Spectroscopy; Dynamics; Molecules; Isolated; Liquid

In this project supported by the Experimental Physical Chemistry Program of the Chemistry Division, Dr. Kenneth Janda of the University of California, Irvine will study the spectroscopy and dynamics of molecules in ultra low temperature liquid helium droplets. Infrared laser spectroscopy and infrared-optical double resonance will be used to study the formation of binary species in order to investigate how such sub-clusters form and how quickly they can dissipate energy. Spectra will be sought for molecules that are encapsulated in or on the surface of a cluster containing argon atoms.The long-term goal of this project is to use helium clusters to make new species by low temperature photochemistry. This project will provide important information on how the superfluid environment of liquid helium cools the vibrational motions of a molecule and will help further the goal of synthesis in ultra-cold clusters. This information ultimately will have an impact on the nature of bonding and chemical structures at ultra low temperatures and the factors limiting chemical reactions at temperatures near absolute zero.

在这个由化学系实验物理化学项目支持的项目中，加州大学欧文分校的Kenneth Janda博士将研究超低温液氦液滴中分子的光谱和动力学。 红外激光光谱和红外光学双共振将用于研究二元物种的形成，以研究此类子团簇的形成方式以及它们耗散能量的速度。 将寻找封装在含有氩原子的团簇内部或表面的分子的光谱。该项目的长期目标是利用氦团簇通过低温光化学来制造新物种。 该项目将提供有关液氦超流体环境如何冷却分子振动运动的重要信息，并将有助于进一步实现超冷团簇的合成目标。 这些信息最终将对超低温下的键合性质和化学结构以及在接近绝对零的温度下限制化学反应的因素产生影响。