标定脉冲星导航探测器的荧光X射线光源

代锦飞; 赵宝升; 盛立志; 周雁楠; 陈琛; 宋娟; 刘永安; 李林森

doi:10.7498/aps.64.149701

摘要

为标定X射线脉冲星导航用探测器, 设计了一种荧光X射线源, 该射线源的工作原理是用X射线管的出射线轰击特定荧光靶材, 从而获得能量一定的荧光X射线, 并以此作为标定探测器的荧光X射线光源. 采用硅漂移半导体探测器在大气环境下测试了按上述原理搭建的荧光X射线光源的能谱分布和光子流量, 从光子流量入手推算了该荧光X射线光源用于真空系统中对探测器进行标定的可行性. 研制出了荧光X射线光源样机, 并在真空系统中对荧光X射线光源样机光子流量做了测试. 在探测距离Dx=300 cm, X射线管管流Ia=200 μA时, 所测得的荧光X射线光源光子流量可达19.57 ph/s@4.51 keV, 25.22 ph/s@5.41 keV, 33.27 ph/s@8.05 keV, 确认了所提方法的可行性, 获得了标定探测器的荧光X射线光源.

关键词:

Abstract

Lots of research work on the X-ray pulsar navigation detector has been carried out, but the rigorous quantitative calibration results of these detectors have never been given out. In order to further promote the research process in X-ray pulsar navigation field, a kind of high-precision X-ray source which could be tunable in energy distribution and photon flux is necessary. A new method has been proposed to generate such an X-ray source, in which a conventional X-ray tube which is called the original level tube is used to excite a special fluorescence target to generate fluorescence X-ray source. Firstly, the primary experiment system is built, with which the intensity of the fluorescence X-ray source is measured in atmospheric environment. The result indicates that the fluorescence X-ray source can be implemented in vacuum system to calibrate the detectors. Then an integral fluorescence X-ray source is fabricated which can be used in vacuum system and its intensity is measured under the condition of Dx=300 cm and Ia=200 μA. The photo fluxes are obtained to be 19.57 phs/s at 4.51 keV, 25.22 phs/s at 5.41 keV, and 33.27 phs/s at 8.05 keV. These data demonstrate the correctness of our method and that this new fluorescence X-ray source can be used to calibrate the x-ray pulsar navigation detector.

Keywords:

作者及机构信息

1.
中国科学院西安光学精密机械研究所, 瞬态光学与光子技术国家重点实验室, 西安 710119;

2.
中国科学院大学, 北京 100084

基金项目: 国家自然科学基金(批准号: 61471354)资助的课题.

Authors and contacts

1.
State Key Laboratory of Transent Optics and Photonics, Xi'an Institute of Optics and Precision Mechanicas, Chinese Academy of Sciences, Xi'an 710119, China;

2.
University of Chinese Academy of Science, Beijing 100084, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61471354).

参考文献

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施引文献

[1]	Hanson J E 1996 Ph. D. Dissertation (Stanford: Stanford University)
[2]	Sheikh S I 2005 Ph. D. Dissertation (Maryland: University of Maryland)
[3]	Shuai P, Li M, Chen S L, Huang Z 2009 Principle and Method of X ray pulsar Navigation System (Beijing: China Astronautic Publishing House) (in Chinese) [帅平, 李明, 陈绍龙, 黄震 2009 X射线脉冲星导航系统原理与方法 (北京: 中国宇航出版社)]
[4]	Fei B J, Sun W J, Xiao Y 2006 J. Acad. Arm. Force Engineer. 20 59 (in Chinese) [费保俊, 孙维瑾, 肖昱 2006 装甲兵工程学院学报 20 59]
[5]	Hu H J, Zhao B S, Sheng L Z, Yan Q R 2011 Acta Phys. Sin. 60 029701 (in Chinese) [胡慧君, 赵宝升, 盛立志, 焉秋容 2011 60 029701]
[6]	Hu H J 2011 Ph. D. Dissertation (Xi'an: Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences) (in Chinese) [胡慧君 2011 博士学位论文 (西安: 中国科学院西安光学精密机械研究所)]
[7]	Sheng L Z, Zhao B S, Zhou F, Wang P 2013 Acta Photon. Sin. 42 1071 (in Chinese) [盛立志, 赵宝升, 周峰, 王朋 2013 光子学报 42 1071]
[8]	Song J, Zhao B S, Sheng L Z, Liu Z 2014 Acta Photon. Sin. 43 0823002 (in Chinese) [宋娟, 赵宝升, 盛立志, 刘哲 2014 光子学报 43 0823002]
[9]	Xu J A, Bi Y 2012 Physics 41 219 (in Chinese) [徐济安, 毕延 2012 物理 41 219]
[10]	Niu H B, Wang K G, Wang L 2009 Chin. Phys. B 18 1807
[11]	Sheng L Z, Zhao B S, Wu J J, Zhou F 2013 Acta Phys. Sin. 62 129702 (in Chinese) [盛立志, 赵宝升, 胡慧君, 周峰 2013 62 129702]
[12]	Wang T Q, Wei X D, Li H J, Lu W 2007 Atom. Energy Sci. Technol. 41 402 (in Chinese) [王同权, 魏晓东, 李宏杰, 路伟 2007 原子能科学技术 41 402]

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