Collision Studies with Laser-Cooled Metastable Helium Atoms - Recoil Atom Spectroscopy

激光冷却亚稳态氦原子的碰撞研究 - 反冲原子光谱

• 批准号: DP0343794
• 负责人: Em/Prof Stephen Buckman
• 金额: $ 18.45万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0343794
• 关键词: Collision; Studies; Laser; Cooled; Metastable

This project will provide the first absolute, differential measurements of the scattering of low energy electrons from metastable excited helium atoms. Laser-cooling techniques are used to create a bright, slow helium beam and a unique approach, where the recoiling atoms are detected, is used for the scattering measurements. Such measurements are of critical importance in the assessment of new scattering theories for excited states and in understanding the role which excited species play in the behaviour of low temperature gas discharges and thus also on the operation of many important devices and phenomena which are based on discharge technology.

该项目将首次提供亚稳态激发氦原子低能电子散射的绝对微分测量。激光冷却技术被用来制造明亮、缓慢的氦束，并采用一种独特的方法，在这种方法中，反冲原子被检测到，用于散射测量。这些测量对于评估激发态的新散射理论，理解激发态在低温气体放电行为中的作用，以及基于放电技术的许多重要装置和现象的操作都是至关重要的。