Development of a New Molecular Beam-Variable Temperature Ion Trap (CP-22PT) for Chemistry Research

开发用于化学研究的新型分子束变温离子阱 (CP-22PT)

• 批准号: 0618735
• 负责人: Mark Smith
• 金额: $ 10万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0618735&HistoricalAwards=false
• 关键词: Development; New; Molecular; Beam; Variable

With support from the Chemistry Research Instrumentation and Facilities: Instrument Development (CRIF:ID) Program, the Department of Chemistry at the University of Arizona will develop under the direction of Mark A. Smith a molecular beam-variable temperature ion trap. This 22 pole trap will allow for: a) multiple reaction probes of trapped ions including the capability to interact trapped ions with low velocity, dense molecular beams of condensable species and to chemically probe reaction products, b) in situ synthesis of complex molecular ions using pulsed reagent gas/buffer gas collisional cooling for subsequent beam species rate measurements, and c) future studies using other techniques such as state-selected laser pumping of ions, velocity selection of neutral beams of molecules or radicals, and extension of these techniques into the temperature range below 1 K.This project will be carried out in collaboration with Freiburg University. The proposed instrumentation development will enable the collaborators to investigate very low energy simple ion reactions of interstellar interest as a function of temperature, beginning at very low and increasing to high temperatures (4-800K). It combines supersonic beam expansion techniques perfected in the Arizona Laboratory with highly sophisticated 22-pole ion trap technology at Freiburg. . The cooperation of the two laboratories in development of this instrument in parallel with instrumentation for the study of hydrogen atom and low energy electron-ion recombination presents a unique educational resource for the training of students in both astrochemistry/laboratory astrophysics as well as general reaction dynamics. The instrument will find direct application in fundamental studies of reaction dynamics as well as in chemical analysis, spectroscopy and complex ion synthesis.

在化学研究仪器和设施：仪器开发计划(CRIF：ID)的支持下，亚利桑那大学化学系将在Mark A.Smith的指导下开发一种分子束-可变温度离子陷阱。这一22极陷阱将允许：a)捕获离子的多个反应探针，包括与捕获的离子与低速、密集的可凝聚物种的分子束相互作用的能力，以及对反应产物进行化学探测的能力；b)使用脉冲试剂气体/缓冲气体碰撞冷却原位合成复杂分子离子，用于随后的束流物种速率测量；以及c)未来使用其他技术进行的研究，例如状态选择的激光泵浦离子，分子或自由基的中性光束的速度选择，并将这些技术扩展到低于1K的温度范围。拟议的仪器开发将使合作者能够研究非常低能量的星际感兴趣的简单离子反应作为温度的函数，从非常低的温度开始，然后增加到高温(4-800K)。它结合了亚利桑那州实验室完善的超音速光束扩展技术和弗莱堡高度复杂的22极离子陷阱技术。。这两个实验室在开发这台仪器的同时，为研究氢原子和低能电子-离子复合提供了一种独特的教育资源，为培训学生在天体化学/实验室天体物理以及一般反应动力学方面提供了独特的教育资源。该仪器将直接应用于反应动力学的基础研究以及化学分析、光谱和络合离子合成。