一种新型单毛细管X光学器件
new type monocapillary X-ray optical device
锥形单毛细管(锥管)是一种利用X射线全反射原理来会聚X射线的光学器件,我们利用高精度光纤拉丝塔制作了高品质的锥管,并且对锥管的束斑大小、传输效率和增益因子进行了测量。测量结果表明,锥管的束斑大小可以达到20微米以下,在8.04keV处,锥管的传输效率为13.86%,距离锥管出口端2.5mm处,增益因子为85。利用锥管会聚X射线,可以得到比目前经常使用的X光透镜更小的束斑,所以锥管在X射线微区分析方面具有独特的优势和潜在的应用价值。
he tapered monocapillary (TP) x-ray optics is based on the total external reflection of X-rays. We designed high quality TP using a high-precision fiber optic tower, and we measured the beam size, the transmission efficiency and the gain factor of the TP. The experimental results show that the beam size of the tapered capillary was below 20 microns. At 8.04keV, the transmission efficiency of the TP was 13.86%, and at 2.5mm to the exit of the TP, the gain factor of the TP was 85. The beam size of X-ray beam focused by using the TP was smaller than that of X-ray beam focused by using an X-ray lens, and therefore, the TP had advantage and potential applications in micro X-ray analysis.
潘秋丽、孙天希、罗萍、刘志国、滕玥鹏、丁训良
粒子探测技术、辐射探测技术、核仪器仪表物理学
锥形单毛细管束斑尺寸传输效率增益因子
tapered monocapillarybeam sizetransmission efficiencygain factor
潘秋丽,孙天希,罗萍,刘志国,滕玥鹏,丁训良 .一种新型单毛细管X光学器件[EB/OL].(2009-03-25)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/200903-987.点此复制
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