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Development of X-Ray Scattering Facility for Surface and Interface Science at the Advanced Photon Source

先进光子源表面和界面科学 X 射线散射设备的开发

基本信息

批准号：
9413973
负责人：
E. Ward Plummer
金额：
$ 53.2万
依托单位：
University of Tennessee Knoxville
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1994
资助国家：
美国
起止时间：
1994-09-15 至 1997-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413973&HistoricalAwards=false
关键词：
Development Ray Scattering Facility Surface

项目摘要

The development of a moveable surface scattering chamber to be situated at the Advanced Photon Source for the study of surfaces and interfaces will be funded with the assistance of the Academic Research Infrastructure Program. The facility will include instrumentation for surface cleaning and diagnostics, electron spectroscopy, and in-situ molecular beam epitaxy (MBE) growth capabilities. Sample holders will be designed for use in the 10-2500 K temperature range. The X-ray scattering will feature a state-of-the-art 6 circle diffractometer. The surface scattering chamber will normally be set up on a bending magnet beamline. The research topics to benefit from this facility include: 1) surface crystallography and phase transitions of clean metal and semiconductor surfaces; 2) alloy and multicomponent surfaces; 3) chemically induced structural changes; 4) nonmetal-to-metal transitions in ultrathin films; 5) step-flow growth; 6) buried interfaces; 7) self-assembled organic monolayers; 8) magnetic scattering from surfaces and interfaces; 9) time-dependent studies of surface phase transformations; 10) coherent X-ray scattering from surfaces. A moveable surface scattering chamber for use at the Advanced Photon Source synchrotron will be developed for the study of surfaces and interfaces. The research will involve the structure and phase transitions of surfaces including time- dependent studies and unusual nonmetal-to-metal transitions in ultrathin films, chemically induced changes in surfaces, buried interfaces, magnetic scattering from surfaces, and coherent X- ray scattering from surfaces.

用于研究表面和界面的可移动表面散射室的开发将在学术研究基础设施计划的帮助下得到资助。该设施将包括用于表面清洁和诊断、电子能谱和原位分子束外延（MBE）生长能力的仪器。样品支架将设计用于在10-2500 K温度范围内使用。x射线散射将采用最先进的6圆衍射仪。表面散射室通常设置在弯曲的磁体波束线上。从该设施受益的研究课题包括：1)清洁金属和半导体表面的表面晶体学和相变；2)合金和多组分表面；3)化学诱导的结构变化；4)超薄膜中非金属到金属的转变；5)阶流生长；6)埋藏界面；7)自组装有机单层膜；8)表面和界面的磁散射；9)表面相变随时间变化的研究；10)表面相干x射线散射。将研制一种用于先进光子源同步加速器的可移动表面散射室，用于表面和界面的研究。研究将涉及表面的结构和相变，包括时间依赖性研究和超薄膜中不寻常的非金属到金属的转变，表面的化学诱导变化，埋藏界面，表面的磁散射和表面的相干X射线散射。