title: [Transmission grating spectrograph for soft X-ray spectrum measurements with a pre-optics].
abstract: A novel diffraction spectroscopic instrument consisting of a large area transmission grating and a grazing-incidence pre-optics comprising of a toroidal mirror, a slit and a cylindrical mirror has been implemented. A nearly perfect stigmatism and a medium spectral resolution are due to the separation of the focusing and dispersing function. The experimental results show that it is possible to construct large area transmission grating spectrograph with high collecting efficiency and good spatial resolution.
authors.affiliation: The State Key Laboratory of Applied Optics, Changchun Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 130022 Changchun.
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.forename: Z
authors.initials: Z
authors.lastname: Tian
authors.forename: B
authors.initials: B
authors.lastname: Chen
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Gao
authors.forename: X
authors.initials: X
authors.lastname: Tian
authors.forename: Z
authors.initials: Z
authors.lastname: Chen
authors.forename: P
authors.initials: P
authors.lastname: Fan
authors.forename: X
authors.initials: X
authors.lastname: Chen