论文部分内容阅读
为优化设计软X射线聚束透镜,使之与软X射线源配合能最大限度地获得高强度软X射线束,在北京同步辐射装置软X光站3W1B束线上,对不同能量软X射线(50~1 500 eV)在不同规格毛细管光导纤维中的传输特性进行研究。研究结果表明:玻璃毛细管对软X光有较高的传输效率,毛细管内径越小,曲率越小,光子能量越小,则传输效率越大;使用含硼(B)量高的DM308型号玻璃材料拉制成内直径为0.45 mm、外直径为0.6 mm的毛细管组成的软X光聚束透镜有较高的传输效率,该规格毛细管可以将能量为250 eV的X射线传播方向改变26°后,其出射能量是入射能量的12%;使用由该规格毛细管设计的软X射线聚束透镜同软X射线点光源组合,收光角可以达到30°,透镜焦点处的功率密度是不使用透镜时的104倍。
In order to optimize the design of soft X-ray condenser lens and make it cooperate with soft X-ray source to get the high-intensity soft X-ray beam to the maximum, on the 3W1B beam line of soft X-ray station of Beijing Synchrotron Radiation Facility, (50 ~ 1 500 eV) in different specifications of the capillary optical fiber transmission characteristics of the study. The results show that the glass capillary has a higher transmission efficiency for soft X-rays, the smaller the capillary diameter, the smaller the curvature, and the smaller the photon energy, the greater the transmission efficiency. The high boron content (B) DM308 glass material The soft X-ray condenser lens made of a capillary tube with an inner diameter of 0.45 mm and an outer diameter of 0.6 mm has higher transmission efficiency. After the capillary tube can change the X-ray propagation direction with an energy of 250 eV by 26 °, The output energy is 12% of the incident energy; using a soft X-ray condenser lens designed by this specification capillary in combination with a soft X-ray point light source, the light reception angle can reach 30 °, and the power density at the focal point of the lens is not using the lens 104 times.