光学精密工程2011，Vol.19Issue(5)：977-982,6.DOI:10.3788/OPE.20111905.0977
利用晶体多重衍射进行同步辐射光子能量标定
Calibration of synchrotron radiation photon energy using crystal multiple diffraction
摘要
Abstract
This paper describes the basic principle of multiple diffraction, including diffraction indexing and its intensity calculation, as well as the direction determination of the incident X-ray that meets the Bragg condition for two specific crystal planes. It proposes a X-ray energy calibration method based on the crystal multiple diffraction. In theory, this calibration method can reach a very high precision of 1 eV when the scanning step is 1＂. To verify the feasibility of this method, a test is performed on the 14B diffraction beam line of Shanghai source,and the 180° φ scanning diffraction pattern for the silicon (111) is collected at 10 keV. All the possible diffraction planes are set up and the glitch is indexed according to the angle difference of them. After indexing of the glitch, the calibrated energy of 10. 06 kev is obtained. The experimental results are consistent with the theoretical results well, which proves that the calibration method can achieve a high precise calibration for photon energies when the angle scanning accuracy meets the needs of experiments.关键词
多重衍射/同步辐射/光子能量标定/φ扫描/衍射谷Key words
multiple diffraction/ synchrotron radiation/ photon energy calibration/ φ scanning/ diffraction glitch分类
数理科学引用本文复制引用
陶世兴,何建华,牛晶,陈鸣之,刘科,王玉,汪启胜,孙波,黄胜,唐琳..利用晶体多重衍射进行同步辐射光子能量标定[J].光学精密工程,2011,19(5):977-982,6.基金项目
上海市自然科学基金资助项目(No.08JC1422500) （No.08JC1422500）
