High-quality synthetic diamond for the monochromator of synchrotron radiation beams

被引：14

作者：

Toda, N ^{[1
]}

Sumiya, H ^{[1
]}

Satoh, S ^{[1
]}

Ishikawa, T ^{[1
]}

机构：

[1] Sumitomo Elect Ind Ltd, Itami Res Labs, Itami, Hyogo 664, Japan

来源：

HIGH HEAT FLUX AND SYNCHROTRON RADIATION BEAMLINES | 1997年 / 3151卷

关键词：

diamond; monochromator; X-ray double-crystal rocking curve; polarized optical image; strain; line defects; Nitrogen impurity; large crystal;

D O I：

10.1117/12.294492

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Synthetic diamond crystals for monochromators of synchrotron radiation beams were grown by temperature gradient method under high pressure and high temperature. Crystalline quality of the diamond was investigated by double-crystal X-ray rocking curve measurement, polarized optical microscopy and X-ray topography. FWHM of rocking curve of the crystal was found to be clearly correlate with macroscopic strain observed by polarized optical microscope. It was also found that large line defects in the crystals have a more significant influence on the FWHM than nitrogen impurity and plane defect. Most of line defects and nitrogen impurity could be removed by using high-quality seed and by adding nitrogen getter to metal solvent, respectively. Using this method, high-quality and large diamond crystals of more than 9 mm, which is useful for the monochromator, could be obtained.

引用

页码：329 / 336

页数：8