US-Austria Cooperative Research: Production and Stability (Unimolecular Decay) of Singly and Multiply Charged vdW Cluster Ions

该奖项支持A教授。W.小卡斯曼，的 宾夕法尼亚州立大学，继续与 T.教授D.奥地利因斯布鲁克大学的Maerk，到 加强他正在进行的国内化学物理研究。 这些 研究人员都有兴趣了解地层， 大气中的气溶胶化学。 的焦点 合作是一项研究的生产，稳定性和反应性 各种化学体系的团簇离子， 各种技术。 奥地利的实验使用电子撞击 电离产生团簇离子，并可识别连续衰变 过程，而美国实验室使用光电离， 在更长的时间内研究解离。 美团 采用飞行时间质谱技术，而 奥地利小组使用双聚焦扇形场质谱仪 来研究类似的现象。 这些技术是互补的， 提供不同的功能，从而实现更完整的 对正在审议的进程的描述。 气相团簇由弱结合的聚集体组成， 原子和/或分子通常显示出介于原子和/或分子之间的性质。 气体和凝聚态。 对团簇的研究不仅有价值， 在桥接气体和冷凝相方面，但也 有趣的是，它们包含了一种新的物质状态， 从基本面的角度来看，是强烈的和不断增长的兴趣。 此外，由于它们在以下方面的潜在作用，它们也很重要： 许多应用和技术领域。 这一新的和迅速 不断增长的领域需要并受益于广泛的应用， 各种实验工具和科学家的互动 来自不同的学科。 的拟议合作 在这两方面都提供了独特的机会， 他们之前合作的效率。

This award supports Professor A. W. Castleman, Jr., of the Pennsylvania State University, for continued collaboration with Professor T. D. Maerk of the University of Innsbruck, Austria, to enhance his ongoing domestic research in chemical physics. These investigators share an interest in understanding the formation and chemistry of aerosols in the atmosphere. The focus of their collaboration is a study of the production, stability and reactivity of cluster ions of a wide variety of chemical systems produced by various techniques. The Austrian experiment uses electron impact ionization to produce cluster ions and can identify sequential decay processes, while the American lab uses photoionization and can investigate dissociation over a longer time. The American group employs time-of-flight mass spectrometric techniques, while the Austrian group uses a double focussing sector field mass spectrometer to study similar phenomena. The techniques are complementary and furnish different capabilities that result in a more complete description of the processes under consideration. Gas phase clusters comprised of weakly bound aggregates of either atoms and/or molecules often display properties that lie between the gas and condensed state. Studies of clusters are not only of value in terms of bridging the gas and condensed phase, but are also interesting since they comprise a new state of matter in which there is intense and growing interest from a fundamental point of view. Furthermore, they are also important due to their potential role in many fields of application and technology. This new and rapidly growing field requires and benefits from the application of a wide variety of experimental tools and the interaction of scientists coming from different disciplines. The proposed collaboration provides unique opportunities in both regards, as amply demonstrated by the productivity of their previous collaboration.