A Schwarzschild microscope with a numerical aperture of 0.2 and a magnification of 130 in a 100μm field of view（FOV）is designed and is working at 13.5 nm.Meanwhile,a CCD is used as a detector with a pixel size of 1...A Schwarzschild microscope with a numerical aperture of 0.2 and a magnification of 130 in a 100μm field of view（FOV）is designed and is working at 13.5 nm.Meanwhile,a CCD is used as a detector with a pixel size of 13μm×13μm and imaging area of 13 mm×13 mm.The imaging quality with tolerances of system and errors of mirrors are considered.We obtain that the best on-axes object resolution can be up to about 200 nm,the average value is 230 nm,and the resolution is about 360 nm at 80μm FOV.展开更多
Nested multilayer mirrors are commonly used in X ray telescope structure to increase the collecting area. To balance the difficulty and cost of producing these mirrors, Wolter-I structures are replaced with conical Wo...Nested multilayer mirrors are commonly used in X ray telescope structure to increase the collecting area. To balance the difficulty and cost of producing these mirrors, Wolter-I structures are replaced with conical Wolter-I structures, but these can lead to significantly poorer angular resolutions. In this Letter, we consider changing one of the mirror shapes（paraboloid or hyperboloid） of a Wolter-I structure to a conical mirror shape, while the other mirror shape remains a quadric surface-type structure, which can thus ensure the imaging quality. The cone-hyperboloid structure is nested to obtain on-axis angular resolution and off-axis images.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11443007 and 11505129)the National Key Scientific Instrument and Equipment Development Project(Nos.2012YQ13012505 and2012YQ24026402)
文摘A Schwarzschild microscope with a numerical aperture of 0.2 and a magnification of 130 in a 100μm field of view（FOV）is designed and is working at 13.5 nm.Meanwhile,a CCD is used as a detector with a pixel size of 13μm×13μm and imaging area of 13 mm×13 mm.The imaging quality with tolerances of system and errors of mirrors are considered.We obtain that the best on-axes object resolution can be up to about 200 nm,the average value is 230 nm,and the resolution is about 360 nm at 80μm FOV.
基金supported by the National Science Instrument and Equipment Development Major Project of Ministry of Science and Technology of China(Nos.2012YQ24026402 and 2012YQ04016403)the Youth Science Fund Project of the National Natural Science Fund of China(No.11505129)
文摘Nested multilayer mirrors are commonly used in X ray telescope structure to increase the collecting area. To balance the difficulty and cost of producing these mirrors, Wolter-I structures are replaced with conical Wolter-I structures, but these can lead to significantly poorer angular resolutions. In this Letter, we consider changing one of the mirror shapes（paraboloid or hyperboloid） of a Wolter-I structure to a conical mirror shape, while the other mirror shape remains a quadric surface-type structure, which can thus ensure the imaging quality. The cone-hyperboloid structure is nested to obtain on-axis angular resolution and off-axis images.
