柏林电子同步加速器中心（BESSY II）X射线辐射测量光束线的组件。

Components for the X-ray radiometry beamline at BESSY II.

作者信息

Krumrey M, Herrmann C, Müller P, Ulm G

机构信息

Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, D-10587 Berlin, Germany.

出版信息

J Synchrotron Radiat. 1998 May 1;5(Pt 3):788-90. doi: 10.1107/S0909049597014787.

DOI:10.1107/S0909049597014787

PMID:15263654

Abstract

Optical components for the X-ray radiometry beamline of the Physikalisch-Technische Bundesanstalt at BESSY II were investigated at BESSY I. Reflectometry measurements on different mirror coatings were used to calculate their capability to suppress higher-order radiation. An MgF(2) coating proved to be best suited for photon energies below 4 keV. The reflectance of silicon (111) monochromator crystals at low photon energies around 2 keV was homogeneous within +/-1%. In a test at a superconducting wavelength shifter the cooling system for the first crystal was shown to cope with the absorbed power of 14 W.

摘要

德国联邦物理技术研究院在BESSY II的X射线辐射测量光束线的光学元件在BESSY I上进行了研究。通过对不同镜面涂层的反射测量来计算其抑制高阶辐射的能力。结果表明，MgF₂涂层最适合低于4 keV的光子能量。硅（111）单色仪晶体在2 keV左右的低光子能量下的反射率在±1%范围内均匀。在超导波长移位器的测试中，第一个晶体的冷却系统显示能够承受14 W的吸收功率。