一种采用一个圆锥镜和一个二次镜的类Wolter-I型X射线望远镜结构
Wolter-I-like X-ray telescope structure using one conical mirror and one quadric mirror
摘要：
在X射线望远镜结构中，通常采用多层膜叠层反射镜来增加收集面积。为了平衡制造这些反射镜的难度和成本，经典的Wolter-I结构先前已经被圆锥形Wolter-I结构所取代，但它可能导致明显较差的角分辨率。在本文中，我们考虑改变一个反射镜的形状（抛物面或双曲面）的Wolter-I结构的圆锥形反射镜的形状，而另一个反射镜的形状仍然是二次曲面型结构，从而可以保证成像质量。理论分析和仿真结果表明，圆锥-双曲面和抛物面-圆锥结构具有最佳的角分辨率，且圆锥-双曲面结构比抛物面-圆锥结构在焦距处的角分辨率短。锥双曲面结构，然后嵌套，以获得最佳的轴上角分辨率和离轴图像。
英文摘要：
Nested multilayer mirrors are commonly used in X-ray telescope structures to increase the collecting area. To balance the difficulty and cost of producing these mirrors, the classical Wolter-I structure has previously been replaced with a conical Wolter-I structure, but it can lead to significantly poorer angular resolution. In this paper, we consider changing one of the mirror shapes (paraboloid or hyperboloid) of the Wolter-I structure to a conical mirror shape, while the other mirror shape remains a quadric surface-type structure, which could thus ensure the imaging quality. Based on a theoretical analysis and the results of simulations, the cone-hyperboloid and paraboloid-cone structures are found to provide the best angular resolutions, and the cone-hyperboloid structure is shorter than the paraboloid-cone structure at the focal length. The cone-hyperboloid structure is then nested to obtain the best on-axis angular resolution and off-axis images.
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