Introduction of Laser Experiments to the Physical Chemistry Laboratory

物理化学实验室激光实验简介

• 批准号: 9051789
• 负责人: Ronald Christensen
• 金额: $ 2.16万
• 依托单位: Bowdoin College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-15 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9051789&HistoricalAwards=false
• 关键词: Introduction; Laser; Experiments; Physical; Chemistry

The institution incorporated several laser experiments into its physical chemistry laboratory. A continuous wave Helium-Cadmium laser and a small double monochromator are used to construct a low-resolution Raman spectrometer which also functions as a fluorimeter. Both forms of the instrument use a versatile computer interface to allow control of scanning, the acquisition and manipulation of data, and the subsequent plotting of results. The department also acquired a low-cost pulsed nitrogen/dye laser and associated electronic for use in short time-scale (10-100ns) measurements of luminescent lifetimes. These measurement are used to analyze the collision-induced energy transfer between excited metal complexes and organic quenchers. The laser-based experiments not only expose majors to modern optics and computer- based data acquisition techniques, but also emphasize a flexible, building-block (as opposed to "black-box") approach to experimental design and computer software. This project emphasizes a low-cost approach toward the introduction of current spectroscopic techniques to undergraduate laboratories. Implementation of the experiments should be of interest to other institutions seeking to sustain student interest in physical chemistry The institution contributed to this project in an amount equal to the NSF funds.

该机构将几项激光实验纳入其 物理化学实验室 连续波氦镉 激光和一个小的双单色器被用来构建一个 低分辨率拉曼光谱仪，也可用作 荧光计 这两种形式的仪器都使用多功能 计算机接口，允许控制扫描，采集 和数据的处理，以及随后的结果绘图。 该部门还购置了一台低成本脉冲氮/染料激光器 和相关的电子设备，用于短时标（10- 100 ns） 发光寿命的测量。 这些测量是 用于分析碰撞引起的能量转移， 激发的金属络合物和有机猝灭剂。 基于激光的 实验不仅使学生接触到现代光学和计算机， 的数据采集技术，但也强调了 灵活的积木式（而不是“黑箱”）方法， 实验设计和计算机软件。 这个项目 强调以低成本的方式引进目前的 光谱技术到本科实验室。 实验的实施应该是其他人感兴趣的。 寻求维持学生对体育兴趣的机构 化学 该机构为该项目提供了相当于 NSF基金