Development of a High-Resolution Photoelectron Spectrometer for the Study of the Electronic Structure of High Temperature Superconductors

这种特殊的光束线正在同步加速器上开发 威斯康星州大学辐射中心。 该项目包括 一种新的、高效率的波荡器的结构 存储环上的线，阿拉丁，用于解决 高温超导科学与技术 材料. 光束线将具有更高的角度和能量 分辨率能力比目前在美国 国家，并将提供补充能力的努力， 目前正在法国、德国和日本开发。 该光束 线将非常适合高分辨率光电子 高温超导体的光谱研究。 的 源将是特别设计的波荡器。 辐射会 由沃兹沃斯单色器分散，光栅 在光子路径中唯一的光学元件。单色 辐射将撞击在250微米大小的斑点上 在样品上，通常将在低温下。 的 光电子将由半球形电容器进行能量分析 在测角仪上带有位置敏感探测器的分析仪。 这条光束线预计将于1993年底完工， 可供一般用户约四分之一的操作 时间更广泛的应用。

This specialized beam line is under development at the Synchrotron Radiation Center, University of Wisconsin. The project includes the construction of a new, high-efficiency undulator based beam line on the storage ring, Aladdin, to be used to address the science and technology of high-temperature superconducting materials. The beam line will have higher angle and energy resolution capabilities than presently available in the United States, and will provide a complementary capability to the efforts now under development in France, Germany, and Japan. This beam line will be ideally suited for high-resolution photoelectron spectroscopic studies of high-temperature superconductors. The source will be a specially designed undulator. The radiation will be dispersed by a Wadsworth monochromator, with the grating being the only optical element in the photon path. The monochromatic radiation will impinge on a two-hundred and fifty micron size spot on the sample, which typically will be at low temperatures. The photoelectrons will be energy analyzed by a hemispherical capacitor analyzer with a position-sensitive detector on a goniometer. Completion on this beam line is anticipated for late 1993, and will be available to general users about one-fourth of the operating time for broader applications.