title: High transmission Ni compound refractive lens for high energy X-rays.
abstract: We present a new planar Ni compound refractive lens for high energy X-rays (116 keV). The lens is composed of identical plano-concave elements with longitudinal parabolic grooves manufactured by a punch technique. In order to increase the lens transmission, the thickness of the single lens at the parabolic groove vertex was reduced to less than 5 μm and the radius of curvature was reduced to about 20 μm. The small radius of curvature allowed us to reduce the number of single elements needed to get the focal length of 3 m to 54 single lenses. The gain parameter has been significantly improved compared to the previous lenses due to higher transmission, but the focused beam size and its gain are not as good as expected, mostly due to the aberrations caused by the lens shape imperfections.
authors: Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
authors: M
authors: M
authors: Brancewicz
authors: Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
authors: M
authors: M
authors: Itou
authors: Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
authors: Y
authors: Y
authors: Sakurai
authors: Faculty of Physics, University of Bialystok, ul. Konstantego Ciolkowskiego 1L, 15-245 Bialystok, Poland.
authors: A
authors: A
authors: Andrejczuk
authors: Nagamine Manufacturing Co., Ltd., 1725-26 Kishinoue, Manno, Kagawa 766-0026, Japan.
authors: S
authors: S
authors: Chiba
authors: Nagamine Manufacturing Co., Ltd., 1725-26 Kishinoue, Manno, Kagawa 766-0026, Japan.
authors: Y
authors: Y
authors: Kayahara
authors: Nagamine Manufacturing Co., Ltd., 1725-26 Kishinoue, Manno, Kagawa 766-0026, Japan.
authors: T
authors: T
authors: Inoue
authors: Nagamine Manufacturing Co., Ltd., 1725-26 Kishinoue, Manno, Kagawa 766-0026, Japan.
authors: M
authors: M
authors: Nagamine