Components for the X-ray radiometry beamline at BESSY II

被引：5

作者：

Krumrey, M ^{[1
]}

Herrmann, C ^{[1
]}

Muller, P ^{[1
]}

Ulm, G ^{[1
]}

机构：

[1] Phys Tech Bundesanstalt, D-10587 Berlin, Germany

来源：

JOURNAL OF SYNCHROTRON RADIATION | 1998年 / 5卷

关键词：

X-ray radiometry; mirror coatings; crystal cooling;

D O I：

10.1107/S0909049597014787

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 MgF2 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.

引用

页码：788 / 790

页数：3

共 7 条

[1]

Blake R. L., 1994, RESONANT ANOMALOUS X, P79

[2] Theory of the use of more than two successive x-ray crystal reflections to obtain increased resolving power [J].