IMPROVEMENT OF BEAM DIVERGENCE IN PSEUDOPARABOLOIDAL BENDING OF AN X-RAY MIRROR

被引：4
|
作者：
MORI, T
SASAKI, S
机构：
[1] Photon Factory, National Laboratory for High Energy Physics
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 1995年 / 66卷 / 02期
关键词：
D O I：
10.1063/1.1145695
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The surface of a flat-plate quartz mirror has been investigated by bending it into a pseudoparaboloid with the mirror bender in BL-3A. The evaluation of the beam collimation and actual mirror curvature have been made by x-ray diffraction using the (+,-,-) arrangement of Si(111) crystals. The FWHM in (+,-,-) rocking curves of a whole beam was reduced from 42.7 to 14.1 arcsec with the collimating mirror. The distances deviating from the ideal paraboloid were found to be very small, i.e., less than 0.6 and 3.5 μm in ±200 and ±400 mm in the mirror length, respectively. The efficiency of the mirror was also estimated from the CeO2 diffraction patterns which were slightly but significantly improved in FWHM and peak intensity with the collimation. © 1995 American Institute of Physics.
引用
收藏
页码：2171 / 2173
页数：3
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