Pulsed Laser Spectroscopy and Kinetics in Physical Chemistry

物理化学中的脉冲激光光谱和动力学

• 批准号: 9451395
• 负责人: Paul Endres
• 金额: $ 1.38万
• 依托单位: Bowling Green State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-01 至 1996-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9451395&HistoricalAwards=false
• 关键词: Pulsed; Laser; Spectroscopy; Kinetics; Physical

9451395 Endres A pulsed laser system will be used to upgrade several upper level chemistry laboratories. This is a very versatile system which demonstrates modern techniques in spectroscopy and allows a wide range of chemical and physical phenomena to be explored. A nitrogen laser will provide very short ultraviolet light pulses suitable for initiating spectroscopic and kinetics studies. The electronics will permit students to follow process on the nanosecond and microsecond time scale. A dye laser accessory extends the output throughout the visible range. The primary use will be in an upper level integrated Analytical-Physical Chemistry laboratory course. The students will study the lifetime of excited states through fluorescence. They will observe short lived reaction intermediates and will study the kinetics of the quenching of fluorescence. The apparatus will enhance current student work; for example, we will use Raman spectra to complement the current Infrared spectroscopy module. Several experiments are directed at areas of Materials Science including time resolved studies of photoconductivity in polyacetylene, the luminescence of microporous silicon, and the study of quantum size effects in the fluorescence of metal sulfide clusters.

9451395 Endres A脉冲激光系统将用于升级几个高级化学实验室。这是一个非常通用的系统，它展示了光谱学中的现代技术，并允许探索广泛的化学和物理现象。氮气激光器将提供非常短的紫外光脉冲，适合启动光谱和动力学研究。该电子学将允许学生在纳秒和微秒的时间尺度上跟踪过程。染料激光器附件将输出扩展到整个可见光范围。主要用于高级分析-物理化学综合实验室课程。学生们将通过荧光来研究激发态的寿命。他们将观察短暂的反应中间产物，并研究荧光猝灭的动力学。该装置将加强当前的学生工作；例如，我们将使用拉曼光谱来补充当前的红外光谱模块。一些实验针对材料科学领域，包括聚乙炔光导的时间分辨研究，微孔硅的发光，以及金属硫化物团簇荧光中的量子尺寸效应的研究。