Instrumentation for High Resolution Electron Loss Spectroscopy for Vibrational Analysis of Rough Practical Surfaces

用于粗糙实际表面振动分析的高分辨率电子损失光谱仪器

• 批准号: 8760724
• 负责人: J. Albert Schultz
• 金额: $ 5万
• 依托单位: IONWERKS, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-02-01 至 1988-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8760724&HistoricalAwards=false
• 关键词: Instrumentation; Resolution; Electron; Loss; Spectroscopy

Electron loss spectroscopy for vibrational analysis is an established technique best suited for adsorbates on polished metallic surfaces. A departure from the standard instrumentation will allow vibrational measurements on practical surfaces such as rough metallic oxides. The technique derives increased sensitivity and vibrational resolution from using low energy electrons in a way which maximizes the interaction cross section and the collection efficiency for loss electrons. Estimation of the sensitivity increase is difficult because the cross sections at low energy are not well known, however, at least an order of magnitude is expected from the increased collection efficiency. The technique is ideally suited for time resolved vibrational analysis on practical surfaces which cannot at present be done.

振动分析的电子损失光谱是一种 已确立的技术最适合于抛光表面上的吸附物 金属表面 与标准仪器的背离 将允许在实际表面上进行振动测量， 粗糙的金属氧化物。 该技术衍生增加了 灵敏度和振动分辨率从使用低能量 使电子的相互作用截面最大化 以及对损失电子的收集效率。 估计 灵敏度的增加是困难的 然而，在低能量下， 预计将从提高的收集效率中获得巨大的收益。 该技术非常适合于时间分辨振动 目前还无法对实际表面进行分析。