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.

将开发一种用于气相中质量选择簇离子的核心级光电子能谱的新实验方法。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规定质量的离子包。光电子的动能由飞行时间电子能谱仪测量。该方法允许记录低位核心能级的光电子能谱。在第一个应用中，将研究金属铅、钛、铝和半导体材料锗的纳米粒子和簇。研究重点是化学性质与块体表面行为的尺寸依赖性偏差。