Core level photoelectron spectroscopy of mass-selected clusters

质量选择团簇的核心级光电子能谱

• 批准号: 262900853
• 负责人: Professor Dr. Gerd Ganteför
• 金额: --
• 依托单位: Institut für Optik und Atomare Physik (IOAP)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/262900853?language=en
• 关键词: Core; level; photoelectron; spectroscopy; mass

A new experimental method for core level photoelectron spectroscopy of mass-selected cluster ions in the gas phase will be developed. Cluster ions are separated in a time-of-flight mass spectrometer. An ion packet of defined mass is illuminated with a laser pulse with a photon energy in the range of 50-100eV. The kinetic energy of the photoelectrons is measured by a time-of-flight electron spectrometer. The method allows the recording of photoelectron spectra of low-lying core levels. In a first application nanoparticles and clusters of the metals lead, titanium, aluminum and the semiconductor material germanium will be studied. The studies focus on the size-dependent deviations of the chemical properties from the behavior of the bulk surfaces.

本文提出了一种新的气相团簇离子核能级光电子能谱的实验方法。簇离子在飞行时间质谱仪中分离。用光子能量在50-100eV范围内的激光脉冲照射具有一定质量的离子包。光电子的动能由飞行时间电子能谱仪测量。该方法允许记录低洼核能级的光电子能谱。在第一个应用中，纳米粒子和金属团铅，钛，铝和半导体材料锗将被研究。研究的重点是化学性质的尺寸依赖偏差从大块表面的行为。