Combining Ultralow Energy Electron Attachment and Miniature Mass Spectrometry: A New Concept for a Hand Held Detector for Explosives and Nerve Agents

超低能电子附着和微型质谱相结合：手持式爆炸物和神经毒剂探测器的新概念

• 批准号: 0441183
• 负责人: Ara Chutjian
• 金额: --
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-10-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0441183&HistoricalAwards=false
• 关键词: Combining; Ultralow; Energy; Electron; Attachment

Both fundamental and developmental work will be carried out in the scattering and attachment of ultralow energy electrons to atoms and molecules. The goal is to develop within five years a hand-held instrument for detection of nerve agents and explosives with extremely low false alarm rate. This system is based on the Wigner s-wave attachment of zero-energy electrons to the terrorist substances. This system has been demonstrated at JPL/Caltech, and is the basis of commercial instruments now in production. The fundamental research will be on the species Cs, CH3I, CD3I, DIMP and DMMP. The developmental work will be in miniaturizing the charged-particle optics (with minimal loss in space-charge limited current) and electronics for a handheld system. Also demonstrated will be the use of a low-power, high current density carbon nanotubes assembly as an electron-ionizer source. This work is leveraged by similar requirements in NASAs planetary programs requiring miniature mass spectrometry. The flexible, broadly applicable hand-held tool will assuredly become a major part of the infrastructure for protecting against terrorist incursion facilities such as air and sea cargo containers, air and railroad terminals (personnel and luggage), nuclear power sites, and border crossings.

将在超低能电子与原子和分子的散射和附着方面开展基础性和发展性工作。目标是在五年内开发出一种手持式仪器，用于检测神经毒剂和爆炸物，误警率极低。这个系统是基于维格纳S波对恐怖物质的零能电子附着。该系统已经在喷气推进实验室/加州理工学院进行了演示，是目前正在生产的商业仪器的基础。基础研究将集中在Cs、CH3I、CD3I、DIMP和DMMP等物种。开发工作将是将手持系统的带电粒子光学(在空间电荷限制电流中损失最小)和电子设备微型化。还将展示使用低功率、高电流密度的碳纳米管组件作为电子电离源。这项工作在美国宇航局需要微型质谱学的行星计划中也有类似的要求。这种灵活的、广泛适用的手持工具肯定会成为防止恐怖分子入侵的基础设施的主要组成部分，如空中和海上货物集装箱、空中和铁路终点站(人员和行李)、核电站和边境口岸。