COMMISSIONING OF A CRYSTAL ANALYZER FOR INELASTIC SCATTERING AND ADVANCED SPECTR

用于非弹性散射和高级光谱的晶体分析仪的调试

• 批准号: 7954291
• 负责人: UWE BERGMANN
• 金额: $ 4.97万
• 依托单位: STANFORD UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-03-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7954291
• 关键词: Active Sites; Computer Retrieval of Information on Scientific Projects Database; Development; Funding; Grant; Institution; Nitrogenase; Performance; Proteins; Research; Research Personnel; Resolution; Resources; Scanning; Source; Staging; Time; United States National Institutes of Health; Zinc; base; detector; emission spectroscopy; improved; photosystem II; structural biology; synchrotron radiation

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Development and commissioning have continued for a spectrometer based on multiple high resolution crystal analyzers for resonant inelastic x-ray scattering (RIXS), x-ray emission spectroscopy (XES) and advanced EXAFS. Currently the setup has six Si(553) analyzers (used for Cu K(beta) XES), three Ge(110) (in (440) order used for Fe 1s2p RIXS), three Ge(111) analyzers (in (333) order used for Mn 1s2p RIXS and range extended (RE) EXAFS, and in (444) order used for Zn K(beta) XES), three Ge(310) analyzers (in (620) order used or Fe K(beta) XES), seven Si(111) analyzers (in (444) order used for Cu 1s2p RIXS and RE EXAFS). During 2008, new stages were procured for both the detectors and analyzer assemblies. The stages should improve ease of setup (by allowing access to a greater range of Bragg angles) and provide more robust performance for continuous scanning. Several collaborative user groups made use of the new setup. Studies included XES examination of zinc protein active site mimics, nitrogenase and photosystem II. In the coming year, the setup will move to a more permanent setup in the middle hutch of 6-2, allowing for reduced setup time and maximizing user access.

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可以在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 基于多个高分辨率晶体分析仪的光谱仪的开发和调试工作仍在继续，该光谱仪用于共振非弹性X射线散射、X射线发射光谱和先进EXAFS。 目前，该装置有六个Si（553）分析仪（用于Cu K（β）XES），三个Ge（110）（以（440）顺序用于Fe 1s2p RIXS），三个Ge（111）分析器（以（333）顺序用于Mn 1s2p RIXS和范围扩展（RE）EXAFS，以及以（444）顺序用于Zn K（β）XES），三个Ge（310）分析器（以（620）顺序用于Fe K（β）XES），七个Si（111）分析器（以（444）顺序用于Cu 1s2p RIXS和RE EXAFS）。2008年期间，为探测器和分析仪组件采购了新的级。这些载物台应提高设置的简易性（通过允许访问更大范围的布拉格角），并为连续扫描提供更强大的性能。几个协作用户组使用了新的设置。研究包括锌蛋白活性位点模拟物、固氮酶和光系统II的XES检测。在未来的一年里，该设置将转移到一个更永久的设置在中间的6 - 2，允许减少设置时间和最大限度地提高用户访问。