| 光谱学与光谱分析 |
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| The X-Ray Fluorescence Spectrometer Based on Pyroelectric Effect |
| DONG Yi-fan1, 2, FAN Rui-rui1, GUO Dong-ya1, 2, ZHANG Chun-lei1, GAO Min1, WANG Jin-zhou1, LIU Ya-qing1, ZHOU Da-wei1, 2, WANG Huan-yu1 |
1. Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2. University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Pyroelectric X-ray generator is implemented, and an X-ray fluorescence spectrometer is accomplished by combining the pyroelectric X-ray generator with a high energy resolution silicon drift detector. Firstly, the parameters of the X-ray generator are decided by analyzing and calculating the influence of the thickness of the pyroelectriccrystal and the thickness of the target on emitted X-ray. Secondly, the emitted X-ray is measured. The energy of emitted X-ray is from 1 to 27 keV, containing the characteristic X-ray of Cu and Ta, and the max counting rate is more than 3 000 per second. The measurement also proves that the detector of the spectrometer has a high energy resolution which the FWMH is 210 eV at 8.05 keV. Lastly, samples of Fe, Ti, Cr and high-Ti basalt are analyzed using the spectrometer, and the results are agreed with the elements of the samples. It shows that the spectrometer consisting of a pyroelectric X-ray generator and a silicon drift detector is effective for element analysis.Additionally, because each part of the spectrometer has a small volume, it can be easily modified to a portable one which is suitable for non-destructive, on-site and quick element analysis.
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Received: 2014-06-17
Accepted: 2014-10-26
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Corresponding Authors:
DONG Yi-fan
E-mail: dongyf@ihep.ac.cn
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