Positive deviation from Debye's theory in small-angle x-ray scattering
Li Zhi-Hong (李志宏)a, Gong Yan-Jun (巩雁军)a, Wu Dong (吴东)a, Sun Yu-Han (孙予罕)a, Zhao Hui (赵辉)b, Dong Bao-Zhong (董宝中)b, Wu Zhong-Hua (吴忠华)b
a State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; b Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
Abstract The small-angle x-ray scattering (SAXS) resulting from a non-ideal two-phase system having sharply defined phase boundaries but with micro-fluctuations of electron density within any phase shows a positive deviation from Debye's theory. We have found a simple method suitable for fitting the slit-smeared SAXS data and correcting the positive deviation. The validity of this procedure is tested on porous ZrO2 xerogel prepared using the sol-gel process.
Received: 03 June 2002
Revised: 28 August 2002
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 29973035), by the National Key Basic Research Special Foundation of China (Grant No G200000480) and by the National Natural Science Priority Project Research Special Foundation of China (Grant No 20133040).
Cite this article:
Li Zhi-Hong (李志宏), Gong Yan-Jun (巩雁军), Wu Dong (吴东), Sun Yu-Han (孙予罕), Zhao Hui (赵辉), Dong Bao-Zhong (董宝中), Wu Zhong-Hua (吴忠华), Positive deviation from Debye's theory in small-angle x-ray scattering 2003 Chinese Physics 12 208
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