U.S.-Germany Workshop on Postionization Techniques in Surface Analysis: University Park, Pennsylvania, May 15-17,1991

该奖项支持12名美国化学家参加将于1991年5月中旬在宾夕法尼亚州立大学举行的美德分析化学研讨会。会议由宾夕法尼亚州立大学的Nicholas Winograd教授和凯泽斯劳滕大学的Hans Oechsner教授共同组织。它得到了美国国家科学基金会和德国联邦科学基金会的联合支持；参与者主要来自美国和德国。研讨会将讨论表面分析中的定位技术。材料科学的革命使这一新领域成为表征表面、薄膜和固体的重要途径。这些方法在微电子学、超导、环境评价、地质学和生物医学材料表征等领域有着广泛的应用。这些技术通常涉及使用高能探头，如激光、电子束或离子束，将部分样品解吸到气相中。现在，电离这些物种的新技术有望提高灵敏度极限，并为成分研究提供新的方法。这些技术包括电子撞击、等离子体和辉光放电源，以及使用激光的单光子和多光子激发。拟议的讲习班将汇集这些领域的专家，以评估定位方法的现状和未来发展。深度剖析、定量和成像等问题将受到特别关注。

This award supports the participation of twelve U.S. chemists in a U.S.-German workshop in analytical chemistry to be held in mid-May, 1991, at The Pennsylvania State University. The meeting is organized jointly by Professor Nicholas Winograd of Penn State and Professor Hans Oechsner of the University of Kaiserslautern. It is supported jointly by NSF and its German counterpart, the Deutsche Forschungs- gemeinschaft; participants are primarily from the U.S. and Germany. The workshop will address postionization techniques in surface analysis. The revolution in materials science has made this new field a vital approach for characterizing surfaces, thin films and solids. These methods have applications in such diverse fields as microelectronics, superconductivity, environmental assessment, geology, and biomedical materials characterization. The techniques generally involve the use of a high energy probe such as a laser, electron or ion beam to desorb a portion of the sample into the gas phase. Now, new techniques to ionize these species are promising to yield improved sensitivity limits and novel approaches for composi- tional studies. These techniques include electron impact, plasma and glow discharge sources, and single and multiphoton excitation using lasers. The proposed workshop will bring together experts in these areas to assess the status and future development of postionization methodologies. Issues such as depth profiling, quantitation and imaging will receive special attention.