Cold Cathodes for Electron Spectroscopy

电子光谱用冷阴极

• 批准号: 9361179
• 负责人: Charles Beetz
• 金额: $ 6.5万
• 依托单位: Advanced Technology Materials, Inc.
• 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: 1994-02-01 至 1994-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9361179&HistoricalAwards=false
• 关键词: Cold; Cathodes; Electron; Spectroscopy

9361179 Beetz The development of cold electron emitter technology has the potential for broadly impacting the rapidly growing area of electron spectroscopy. Commercially available instrumentation such as Auger spectrometers typically employ thermionic electron sources which restrict their scope of use through filament heating effects and thermal cracking of gases on filaments. These instruments are also not capable of performing time resolved phenomena on the sub second level. The development of a robust cold emitter capable of high frequency pulsed operation would not only solve these problems but more importantly, it would enable revolutionary new development in the construction of extremely high speed, high sensitivity electron spectroscopic instrumentation employing Fas Fourier Transform (FFT) time of flight measurement techniques. In Phase I, Advanced Technology Materials, Inc (ATM) will determine the feasibility of fabricating a cold cathode electron source using a novel diamond junction base emitter. The cold cathode source will be evaluated and in Phase II be employed in the construction of a prototype FFT Auger spectrometer. In Phase III commercial production of cold cathode electron beam guns is anticipated for use in a variety of electron spectroscopy and UHV instrumentation applications. ***

9361179 Beetz 冷电子发射器技术的发展有可能对快速增长的电子光谱领域产生广泛影响。 诸如俄歇能谱仪之类的市售仪器通常采用热离子电子源，热离子电子源通过灯丝加热效应和灯丝上气体的热裂解来限制其使用范围。 这些仪器也无法在亚秒级上执行时间分辨现象。 开发能够进行高频脉冲操作的鲁棒冷发射器不仅可以解决这些问题，更重要的是，它将在采用 Fas 傅立叶变换 (FFT) 飞行时间测量技术的极高速、高灵敏度电子能谱仪器的构造中实现革命性的新发展。 在第一阶段，Advanced Technology Materials, Inc (ATM) 将确定使用新型金刚石结基极发射极制造冷阴极电子源的可行性。 冷阴极源将进行评估，并在第二阶段用于构建原型 FFT 俄歇光谱仪。 在第三阶段的商业生产中，冷阴极电子束枪预计将用于各种电子能谱和特高压仪器应用。 ***