Polyatomic Ion-Surface Collisions in Mass Spectrometry and Materials Science

这项研究项目得到了分析和表面化学计划的支持，重点是低能多原子离子与被吸附的金属表面的相互作用。在这项为期33个月的资助期间，芝加哥伊利诺伊大学的Luke Hanley教授和他的学生将寻求发展对多原子离子表面诱导解离的理解，以应用于分析质谱学，并研究能量在多层吸附体内的沉积。具有超高真空散射室的串联式四极质谱计将用于这些研究，该仪器是汉利教授最近在美国国家科学基金会授予的CHE-9220393资助下开发的。本研究采用实验和计算相结合的方法，研究了低能多原子离子与被吸附金属表面的相互作用。对多原子离子-表面碰撞的详细了解对于发展表面诱导解离(SID)作为生物分析质谱学中的一种样品引入技术是非常重要的。这样的理解对材料加工中广泛使用的表面改性方法的发展也很重要。

This research project, supported in the Analytical and Surface Chemistry Program, focusses on the interaction of low energy polyatomic ions with adsorbate covered metal surfaces. During the tenure of this thirty-three month grant, Professor Luke Hanley and his students at the University of Illinois at Chicago will seek to develop an understanding of the surface induced dissociation of polyatomic ions for application in analytical mass spectrometry, and to investigate the deposition of energy into multilayers of adsorbates. A tandem quradrupole mass spectrometer with an ultra-high vacuum scattering chamber, developed recently by Professor Hanley under NSF grant CHE- 9220393, will be used in these studies. This research combines experimental and computational methods to study the interaction of low energy polyatomic ions with adsorbate covered metal surfaces. A detailed understanding of polyatomic ion-surface collisions is important to the development of surface induced dissociation (SID) as a sample introduction technique in bioanalytical mass spectrometry. Such an understanding is also important to the development of surface modification methodologies that are widely used in materials processing.