Development of pressure-modulated EXAFS method

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CHU Sheng-Qi, ZHENG Li-Rong, CHE Rong-Zheng, ZHOU Ai-Yu, ZHANG Jing, LIU Jing and HU Tian-Dou. Development of pressure-modulated EXAFS method[J]. Chinese Physics C, 2012, 36(2): 184-187. doi: 10.1088/1674-1137/36/2/015
CHU Sheng-Qi, ZHENG Li-Rong, CHE Rong-Zheng, ZHOU Ai-Yu, ZHANG Jing, LIU Jing and HU Tian-Dou. Development of pressure-modulated EXAFS method[J]. Chinese Physics C, 2012, 36(2): 184-187.  doi: 10.1088/1674-1137/36/2/015 shu
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Received: 2011-05-16
Revised: 2011-05-31
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Development of pressure-modulated EXAFS method

    Corresponding author: CHU Sheng-Qi,
    Corresponding author: HU Tian-Dou,

Abstract: Many modulation techniques have been widely applied to improve the quality of conventional spectra. Here a pressure-modulated EXAFS method is proposed to detect the small changes of local structure induced by the modulation of high pressure. In the experiment a dynamic diamond anvil cell was used to put a periodic load on the sample and lock-in amplifier to measure the modulated EXAFS signals. We have applied this technique to ZnSe and revealed a sensitivity to atomic displacement of 0.1 pm that is about ten times better than that of traditional EXAFS.

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