HOPG as powerful x-ray optics

摘要

A new method of producing strongly bent highly oriented pyrolytic graphite (HOPG) is presented. The method allows one to make a crystal of almost arbitrary shape, but has some thickness limits. A review of the results obtained on this type of crystal by different laboratories during the last 10 years is given. An x-ray intensity gain from a synchrotron radiation source and Mo Kalpha tube beams of one order of magnitude could be achieved when using a crystal of optimized shape. The application of the crystals for secondary monochromatization in EDXRF improves by one order of magnitude the detection limits for the elements of interest. Copyright (C) 2003 John Wiley Sons, Ltd. [References: 16]