摘要
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20μm以下,在8.04 keV处,锥管的传输效率为13.86%,距离锥管出口端2.5 mm处,增益因子为85。同时,还利用光线追迹软件shadow对锥管的束斑大小、传输效率和增益因子进行了理论模拟,理论模拟结果与实验中测量的结果符合得较好。测试结果表明,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。
A high quality tapered monocapillary （TP） using a high-precision fiber optic tower is designed,and the beam size,the transmission efficiency and the gain factor of the TP are measured. The experimental results showed that the beam size of the tapered capillary is below 20 microns. At 8.04 keV,the transmission efficiency of the TP is 13.86%,and at 2.5 mm to the exit of the TP,the gain factor of the TP is 85. At the same time,shadow software developed for beam tracing is used to simulate the beam size,the transmission efficiency and the gain factor of the TP,the simulation results matched well with the experimental results. 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.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2010年第2期542-545,共4页
Acta Optica Sinica
基金
教育部科学技术研究重点项目基金(108125)
应用光学北京市重点实验室建设项目基金(JD100270543)
北京市自然科学基金(1092013)
高等学校博士学科点专项科研基金(200800271021)资助课题
