http://www.2spi.com/catalog/new/hopgsub.php
Use as graphite monochromators:
The HOPG offered by SPI Supplies, especially the SPI-1 and ZYA grades, are reported to diffract x-rays and neutrons with a higher efficiency that any other material. For x-rays the intensities are increased up to five times greater than what would be possible with the lithium fluoride crystal it would replace. A singly bent focusing monochromator using these highest quality grades of HOPG, i.e. those with the smallest mosaic spread, result in intensities three times that of LiF at the same resolution.http://pd.chem.ucl.ac.uk/pdnn/inst1/monoc.htm
For X-ray and neutron analysis. Size: 25mm x 25mm x 2mm. Grade ZYA Flat.
