| 光谱学与光谱分析 |
|
|
|
|
|
| Influence of the Experiment Energy Dispersive X-Ray Fluorescence Measurement of Uranium by Different Excitation Source |
| XIONG Chao1,2, GE Liang-quan1*, LIU Duan3, ZHANG Qing-xian1, GU Yi1, LUO Yao-yao1, ZHAO Jian-kun1 |
1. College of Nuclear Technology and Automation，Chengdu University of Technology，Chengdu 610059，China
2. Jiangxi Nuclear Industry Geological Bureau Testing Center，Nanchang 330002，China
3. The Radiation Environment Monitoring Station of Mianyang，Mianyang 621000，China |
|
|
|
|
Abstract Aiming at the self-excitation effect on the interference of measurements which exist in the process of Energy dispersive X-ray fluorescence method for uranium measurement. To solve the problem of radioactive isotopes only used as excitation source in determination of uranium. Utilizing the micro X-ray tube to test Self-excitation effect to get a comparison of the results obtained by three different uranium ore samples—109Cd，241Am and Mirco X-ray tube. The results showed that self-excitation effect produced the area measure of characteristic X-ray peak is less than 1% of active condition, also the interference of measurements can be negligible. Photoelectric effect cross-section excited by 109Cd is higher, corresponding fluorescence yield is higher than excited by 241Am as well due to characteristics X-ray energy of 109Cd, 22.11 & 24.95 KeV adjacent to absorption edge energy of Lα, 21.75 KeV, based on the above, excitation efficiency by 109Cd is higher than 241Am; The fact that measurement error excited by 241Am is significantly greater than by 109Cd is mainly due to peak region overlap between L energy peaks of uranium and Scattering peak of 241Am, 26.35 keV, These factors above caused the background of measured Spectrum higher; The error between the uranium content in ore samples which the X-ray tube as the excitation source and the chemical analysis results is within 10%. Conclusion: This paper come to the conclusion that the technical quality of uranium measurement used X-ray tube as excitation source is superior to that in radioactive source excitation mode.
|
|
Received: 2015-05-19
Accepted: 2015-10-25
|
|
|
|
Corresponding Authors:
GE Liang-quan
E-mail: glq@cdut.edu.cn
|
|
[1] GE Liang-quan, ZHOU Si-chun, LAI Wan-chang，et al(葛良全，周四春，赖万昌，等). In-Situ X-Ray Sampling Technique(原位X辐射取样技术). Chengdu: Sichuan Science and Technology Publishing House(成都: 四川科学出版社)，1997. 2.
[2] ZHAO Feng-kui, WANG Ai-min(赵奉奎，王爱民). Nuclear Techniques(核技术)，2013，36(10): 54.
[3] WANG Zhuo, GE Liang-quan, ZHANG Qing-xian，et al(王 卓，葛良全，张庆贤，等). Nuclear Techniques(核技术)，2012，35(7)：549.
[4] CHENG Feng, GE Liang-quan, LAI Wan-chang，et al(程 锋，葛良全，赖万昌，等). Uranium Geology(铀矿地质)，2008，24(6) : 375.
[5] ZHOU Rong-sheng, MA Ying-jie, FANG Fang，et al(周蓉生，马英杰，方 方，等). China Geology(中国地质)，2001，28(5)：39.
[6] GU Yi, XIONG Sheng-qing, GE Liang-quan，et al(谷 懿，熊盛青，葛良全，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2014, 34(1)：252.
[7] ZHANG Qing-xian, GE Liang-quan, GU Yi，et al(张庆贤，葛良全，谷 懿，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2013, 33(8)：2231.
[8] YANG Qiang, GE Liang-quan, GU Yi，et al(杨 强，葛良全，谷 懿，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2013, 33(4)：1130.
[9] LIU Yun-zuo(刘运祚). Common Radionuclide Decay Scheme(常用核素衰变纲图). Beijing: Atomic Energy Press(北京: 原子能出版社), 1982. 413.
|
| [1] |
LI Ming, YANG Meng, HUANG Xiu, FENG Lu, FAN Bo-wen, XING Zhi* . Recent Progress at Atomic Spectrum Field for DBD Research and Development[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(01): 1-6. |
| [2] |
WANG Yong-qing1,2,LOU Jian-zhong1,SUN Rong-xia1,MA Wen3,TANG Yu-jun1,PU Yong-ni1 . A Microfabricated ICP Source Base on Planar Spiral-Shaped Coil[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(11): 2708-2712. |
|
|
|
|
