Development of a Novel Laboratory Instrument for Studying Gas-Phase Negative Ion Chemistry

开发用于研究气相负离子化学的新型实验室仪器

基本信息

批准号：
0520660
负责人：
Daniel Wolf Savin
金额：
$ 73.55万
依托单位：
Columbia University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2005
资助国家：
美国
起止时间：
2005-09-15 至 2009-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0520660&HistoricalAwards=false
关键词：
Development Novel Laboratory Instrument Studying

项目摘要

With support from the Chemistry Research Instrumentation and Facilities - Instrument Development (CRIF-ID) Program, Daniel Savin in the Astrophysics Laboratory at Columbia University will develop a new instrument for studying gas-phase, anion-neutral reactions which complements the existing methods, thereby filling an important niche. The PI will use fast, merged anion-neutral beams and detect the charged end products. This novel research instrument will combine state-of-the-art laboratory methods in a unique arrangement not currently available elsewhere and will add new capabilities allowing for the detection of detached product electrons. Future extensions will allow direct detection of the product anions. Laboratory beam energies will be in the keV range; but because the beams run co-linear, center-of-mass energies from the meV to keV range can be achieved. The PI will to be able to measure absolute reaction cross sections with an accuracy of " 20%. This instrument will represent the first use of fast, merged beams to study anion-neutral reactions and the first detection of detached electrons from a merged beams arrangement. This instrument will have impact in a large number of fields, including astrophysics, physical chemistry, mass spectrometry and even possible in more remote disciplines, such as physical organic and environmental chemistry. Thus, it serves a diverse population of the scientific community from a scientific and education standpoint.

在化学研究仪器和设施 - 仪器开发（CRIF-ID）计划的支持下，哥伦比亚大学天体物理实验室的 Daniel Savin 将开发一种用于研究气相、阴离子中性反应的新仪器，该仪器补充了现有方法，从而填补一个重要的利基市场。 PI 将使用快速、合并的阴离子中性光束并检测带电的最终产品。这种新颖的研究仪器将以目前其他地方无法提供的独特布置结合最先进的实验室方法，并将增加新的功能，允许检测分离的产物电子。未来的扩展将允许直接检测产物阴离子。实验室束流能量将在 keV 范围内；但由于光束共线运行，因此可以实现从 meV 到 keV 范围的质心能量。 PI 将能够以 20% 的精度测量绝对反应截面。该仪器将代表首次使用快速合并光束来研究阴离子中性反应，并首次检测合并光束排列中的分离电子该仪器将在许多领域产生影响，包括天体物理学、物理化学、质谱学，甚至可能在物理有机和环境化学等更遥远的学科中产生影响，因此，它服务于不同的科学群体。从科学和教育的角度来看，社区。