Supersonic Beam Studies of Collisions Between Rare Gas Metastable Atoms and Fullerenes

稀有气体亚稳原子与富勒烯碰撞的超音速束研究

• 批准号: 9713929
• 负责人: William Jackson
• 金额: $ 38.47万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-02-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9713929&HistoricalAwards=false
• 关键词: Supersonic; Beam; Studies; Collisions; Between

In this project supported by the Experimental Physical Chemistry Program of the Chemistry Division, Jackson will use crossed molecular beams to measure electron energy distributions from delayed ionization of fullerene metastable states as well as to study scattering between fullerenes and metastable atoms. Insight will be gathered on delayed ionization processes in clusters, large molecules, and systems of restricted size as well as on the formation of endohedral fullerenes, an important problem in physical as well as organic chemistry. Fullerenes comprise a class of chemical carbon compounds in which the locations of the carbon atoms define a nearly spherically shaped geodesic surface. The 1996 Nobel Prize in Chemistry was awarded to the discoverers of this new form of elemental carbon. The generic term `fullerene` now commonly refers both to atomic clusters of carbon atoms located at the corners of pentagons and hexagons forming a closed surface as well as to tubular structures, irrespective of the actual numbers of composing atoms. Fullerenes are found to be unusually stable and, even though originally thought to be rare in nature, can actually be easily made. Due to the potential of technological applications, fullerenes are the subject of intense investigations of their physical, chemical, and material properties. Their chemical reactivities are not well understood and the purpose of this fundamental research project is to contribute to the knowledge base of these systems and thereby help in their eventual exploitation for technological applications.

在这个由实验物理化学计划支持的项目中， 杰克逊将使用交叉分子束， 测量延迟电离的电子能量分布， 富勒烯亚稳态以及研究散射之间 富勒烯和亚稳原子。 洞察力将在延迟后收集 团簇、大分子和系统中的电离过程 限制的大小，以及对形成的内嵌富勒烯， 物理化学和有机化学中重要问题。 富勒烯包括一类化学碳化合物，其中 碳原子的位置定义了一个近似球形的测地线 面 1996年诺贝尔化学奖授予了 这种新形式的元素碳的发现者 通用术语 “富勒烯”现在通常指的是碳原子的原子簇 位于形成闭合表面的五边形和六边形的角部 以及管状结构，而不管实际的 组成原子。 富勒烯被发现异常稳定，甚至 虽然最初被认为是罕见的性质，实际上可以很容易地 进行了 由于技术应用的潜力，富勒烯是 他们的物理，化学， 材料性能。 它们的化学反应性尚不清楚 这个基础研究项目的目的是 这些系统的知识基础，从而帮助他们最终 开发技术应用。