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Proceedings Paper

High-quality synthetic diamonds for the monochromator of synchrotron radiation beams
Author(s): Naohiro Toda; Hitoshi Sumiya; Shuichi Satoh; Tetsuya Ishikawa
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Paper Abstract

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.

Paper Details

Date Published: 11 December 1997
PDF: 8 pages
Proc. SPIE 3151, High Heat Flux and Synchrotron Radiation Beamlines, (11 December 1997); doi: 10.1117/12.294492
Show Author Affiliations
Naohiro Toda, Sumitomo Electric Industries, Ltd. (Japan)
Hitoshi Sumiya, Sumitomo Electric Industries, Ltd. (Japan)
Shuichi Satoh, Sumitomo Electric Industries, Ltd. (Japan)
Tetsuya Ishikawa, RIKEN--The Institute of Physical and Chemical Research (Japan)

Published in SPIE Proceedings Vol. 3151:
High Heat Flux and Synchrotron Radiation Beamlines
Albert T. Macrander; Ali M. Khounsary, Editor(s)

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