High Resolution Spectroscopy for Undergraduates

本科生高分辨率光谱学

• 批准号: 9450936
• 负责人: Alvin Compaan
• 金额: $ 2.36万
• 依托单位: University of Toledo
• 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: 1994-09-01 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9450936&HistoricalAwards=false
• 关键词: Resolution; Spectroscopy; Undergraduates

9450936 Compaan The University of Toledo Department of Physics and Astronomy proposes to enhance its advanced undergraduate Atomic and Molecular Physics Laboratory (Physics 481) with the addition of a structured sequence of experiments in high resolution spectroscopy. This sequence will build on existing experiments, which use grating spectrometers and Fabry-Perot interferometers, to add several related experiments in high resolution atomic and molecular spectroscopy. The new laboratory experiences will include 1) Raman scattering from diatomic molecules, 2) velocity measurements on solar spectra using the UT heliostat, an echelle spectrometer, and a CCD detector, 3) Doppler-free tunable diode laser saturation spectroscopy of rubidium vapor, 4) recoilless gamma ray absorption studies via the Mossbauer effect, and 5) radiative lifetime measurements with a pulsed diode laser. This sequence will provide the students with laboratory experiences utilizing modern spectroscopy equipment, data acquisition, and data analysis while exposing them to classic experiments which all relate to linewidth broadening in electromagnetic radiation processes. Among other measurements the students will determine interatomic separations in O2, N2, and CO2, the nuclear spin statistics and rotational temperatures of these molecules, the rotational velocity of the sun, Gaussian and Lorentzian broadening in gases, mode structures of laser emission, recoil-free radiation processes with high energy photons, and uncertainty principle limits to radiative linewidths.

小行星9450936 托莱多大学物理学和天文学系建议通过增加高分辨率光谱学实验的结构化序列来增强其高级本科生原子和分子物理实验室（物理481）。 这个序列将建立在现有的实验，使用光栅光谱仪和法布里-珀罗干涉仪，增加几个相关的实验，在高分辨率原子和分子光谱。新的实验室经验将包括1）双原子分子的拉曼散射，2）使用UT定日镜、中阶梯光谱仪和CCD探测器测量太阳光谱的速度，3）铷蒸气的无多普勒可调谐二极管激光饱和光谱学，4）通过穆斯堡尔效应进行无反冲伽马射线吸收研究，以及5）使用脉冲二极管激光器测量辐射寿命。该序列将为学生提供利用现代光谱设备，数据采集和数据分析的实验室经验，同时将他们暴露于所有与电磁辐射过程中的线宽加宽有关的经典实验。在其他测量中，学生将确定O2，N2和CO2的原子间分离，这些分子的核自旋统计和旋转温度，太阳的旋转速度，气体中的高斯和洛伦兹加宽，激光发射的模式结构，高能光子的无反冲辐射过程，以及辐射线宽的不确定性原理限制。