Molecular Beam Spectroscopy and Dynamics Probed by Laser Induced Ionization

激光诱导电离探测分子束光谱和动力学

• 批准号: 8800991
• 负责人: James Reilly
• 金额: $ 36.53万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-04-15 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8800991&HistoricalAwards=false
• 关键词: Molecular; Beam; Spectroscopy; Dynamics; Probed

This research, part of the Experimental Physical Chemistry Program, is designed to investigate the dynamics and energy levels of isolated gas phase molecules. This knowledge is pivotal to the understanding of chemical bonding and the mechanisms of chemical reactions. The ions and the kinetic energy distribution of the electrons produced by ultraviolet laser induced ionization will be monitored using time of flight methods. Supersonic beam technology is used to cool the species studied, thereby simplifying the rotational structure attendant upon the electronic transitions studied. The time dependence of intramolecular vibration relaxation and electronic relaxation will be studied. The results of this research will be both novel and complementary to that obtained using conventional absorption and fluorescence spectroscopy. Among the species to be studied are p-difluorobenzene, benzene, benzaldehyde, biphenyl, and several diatomic molecules.

本研究是实验物理化学的一部分， 程序，旨在研究动力学和能量 孤立的气相分子的水平。 这种知识是 对理解化学键和 化学反应的机制。 离子和电子的动能分布 产生的紫外激光诱导电离将是 使用飞行时间方法监测。 超声束 技术用于冷却所研究的物种，从而 简化了伴随于 电子跃迁研究 的时间依赖性 分子内振动弛豫和电子弛豫 将被研究。 这项研究的结果将是双方 新颖的和互补的获得使用常规的 吸收和荧光光谱。 在物种中， 被研究的是对二氟苯，苯，苯甲醛， 联苯和几种双原子分子。