Engineering Research Equipment Grant: Autoscanning Ring Dye Laser System

工程研究设备资助：自动扫描环染料激光系统

• 批准号: 9006759
• 负责人: Sudarshan Loyalka
• 金额: $ 9.32万
• 依托单位: University of Missouri-Columbia
• 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: 1990-07-01 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9006759&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Grant; Autoscanning

A high power,auto-scanning, ring dye laser system is proposed for accurate sizing of micro-particles (1 to 50 microns) by means of wavelength dependent resonance spectra. Measurements are performed on a single particle levitated in an electrical field. The particle is illuminated. Accuracy on the order of 1 Angstrom is expected. Besides the particle size, one can determine forces on particles in temperature and density gradients, evaporation and condensation rates, nucleation rates, and collection efficiencies. Measurement of micro-particle properties is important to many research area, such as manufacturing (superconductors, semiconductors, chemicals), weather (fog, mist, ozone, nuclear winter) and pollution control (smog, acid rain, radon).

提出了一种高功率，自动扫描，环形染料激光系统，用于精确尺寸的微颗粒（1至50微米），利用波长相关的共振光谱。测量是对悬浮在电场中的单个粒子进行的。粒子被照亮。预计精度在1埃左右。除了颗粒大小，还可以确定温度和密度梯度、蒸发和冷凝速率、成核速率和收集效率对颗粒的作用力。微粒特性的测量对许多研究领域都很重要，例如制造业（超导体、半导体、化学）、天气（雾、薄雾、臭氧、核冬天）和污染控制（烟雾、酸雨、氡）。