Development of an x-ray generator using a pyroelectric crystal for x-ray fluorescence analysis on planetary landing missions
Development of an x-ray generator using a pyroelectric crystal for x-ray fluorescence analysis on planetary landing missions
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开发使用热释电晶体的 X 射线发生器，用于行星着陆任务中的 X 射线荧光分析
DOI：
10.1117/12.2061547
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
José A. Matias Lopes
中科院分区：
文献类型：
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作者：
H. Kusano;Yukinori Oyama;M. Naito;H. Nagaoka;H. Kuno;E. Shibamura;N. Hasebe;Y. Amano;K. Kim;José A. Matias Lopes
行星表面化学元素丰度是行星科学研究的基础。我们一直在开发一种主动X射线光谱仪（AXS），这是一种基于X射线荧光分析的原位化学元素分析仪，用于未来的行星着陆任务。AXS由一个X射线探测器和多个X射线源组成。虽然热释电X射线发生器是很有希望的AXS作为X射线源，发射X射线强度的提高是必要的短时间和精确的元素组成的测定。另外，为了提高Mg、Al、Si等轻主元素的检测效率，通过改变靶材料，进行了低能X射线的放射性试验。本文采用蒙特卡罗模拟方法对靶的X射线发射进行了计算，并进行了X射线发射实验。使用厚度为4 mm的LiTaO3晶体和厚度为10 μ m的Cu靶，最大可获得超过106 cps的时间平均X射线发射速率。本文介绍了热释电X射线发生器的性能。
The chemical element abundance on planetary surface is essential for planetary science. We have been developing an active X-ray spectrometer (AXS), which is an in-situ chemical element analyzer based on the X-ray florescence analysis for future planetary landing missions. The AXS consists of an X-ray detector and multiple X-ray sources. Although a pyroelectric X-ray generator is promising for the AXS as an X-ray source, the raise of emission X-ray intensity is necessary for short-time and precise determination of elemental composition. Also, in order to enhance the detection efficiency of light major elements such as Mg, Al, and Si, we have tested the low energy X-ray emission by changing the target material. In this study, the X-ray emission calculation at the target by Monte Carlo simulation and the X-ray emission experiments were carried out. More than 106 cps of the time-averaged X-ray emission rate was achieved in maximum using a LiTaO3 crystal with 4 mm thickness and Cu target with 10 um thickness. The performance of pyroelectric X-ray generator is presented in this paper.
低压气氛下偏振LiNbO_3单晶的X射线辐射
DOI：
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发表时间：
2009
期刊：
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control(IEEE TUFFC) Vol.56
影响因子：
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作者：
森脇哲平;小林啓恵;宮沢豊;藤井伸治;高橋秀幸;童連(First author);童連(First author);童連(First author);童連(First author);童連;童連;童連;Shinji Fukao;Shinji Fukao;Shinji Fukao;Shinji Fukao
通讯作者：
Shinji Fukao