Spectroscopy and Dynamics of Molecules Isolated in Liquid Helium Droplets

在这个由化学部实验物理化学计划支持的项目中，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-光学双共振将被用来研究双星物种的形成，以便研究这些亚星团是如何形成的，以及它们能以多快的速度耗散能量。这个项目的长期目标是利用氦原子团通过低温光化学来形成新的物种。这个项目将提供有关液氦超流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在超冷星系团中进行合成的目标。这些信息最终将对超低温下的成键性质和化学结构以及在绝对零度附近限制化学反应的因素产生影响。

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.