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Journal of Astronomical Telescopes, Instruments, and Systems • Open Access

Studies of print-through and reflectivity of x-ray mirrors using thin carbon-fiber-reinforced plastic
Author(s): Satoshi Sugita; Hisamitsu Awaki; Kenya Yoshioka; Keiji Ogi; Hideyo Kunieda; Hironori Matsumoto; Takuya Miyazawa; Ikuyuki Mitsuishi; Toshihiro Iwase; Shigetaka Saji; Sasagu Tachibana; Masato Maejima; Shun Yoshikawa; Naoki Shima; Takashi Ishikawa; Takayoshi Hamada; Naoki Ishida; Hiromichi Akiyama; Kazuaki Kishimoto; Shin Utsunomiya; Tomohiro Kamiya; Kentaro Uesugi; Yoshio Suzuki

Paper Abstract

We fabricated x-ray mirrors from carbon-fiber-reinforced plastic with a tightly nested design for x-ray satellites, using a replication method for the surfaces. We studied the effects of print-through on the mirror surface as a function of curing temperature. With room temperature curing, the root-mean-square value of the surface error was 0.8 nm. The reflectivity was measured using 8-keV x-rays, and the roughness was calculated as 0.5 nm by model fitting—comparable to that of the ASTRO-H/HXT mirror. We verified the long-term stability of the mirror surface over 6 months. We fabricated Wolter type-I quadrant-shell mirrors with a diameter of 200 mm and performed x-ray measurements at BL20B2 in the SPring-8 synchrotron radiation facility. We obtained reflection images of the mirrors using a 20-keV x-ray spot beam with a slit size of 10×1  mm in the radial and circumferential directions, respectively. The averaged half-power diameter (HPD) of the images in one mirror was 1.2 arc min in the circumferential center of the mirror and 3.0 arc min at the edge. In the spot images with a smaller slit size of 10×0.2  mm, we achieved an HPD of 0.38 arc min in the best case.

Paper Details

Date Published: 12 January 2016
PDF: 8 pages
J. Ast. Inst. Sys. 2(1) 014002 doi: 10.1117/1.JATIS.2.1.014002
Published in: Journal of Astronomical Telescopes, Instruments, and Systems Volume 2, Issue 1
Show Author Affiliations
Satoshi Sugita, Ehime Univ. (Japan)
Hisamitsu Awaki, Ehime Univ. (Japan)
Kenya Yoshioka, Ehime Univ. (Japan)
Keiji Ogi, Ehime Univ. (Japan)
Hideyo Kunieda, Nagoya Univ. (Japan)
Hironori Matsumoto, Nagoya Univ. (Japan)
Takuya Miyazawa, Nagoya Univ. (Japan)
Ikuyuki Mitsuishi, Nagoya Univ. (Japan)
Toshihiro Iwase, Nagoya Univ. (Japan)
Shigetaka Saji, Nagoya Univ. (Japan)
Sasagu Tachibana, Nagoya Univ. (Japan)
Masato Maejima, Nagoya Univ. (Japan)
Shun Yoshikawa, Nagoya Univ. (Japan)
Naoki Shima, Nagoya Univ. (Japan)
Takashi Ishikawa, Nagoya Univ. (Japan)
Takayoshi Hamada, Tamagawa Industries, Ltd. (Japan)
Naoki Ishida, Tamagawa Industries, Ltd. (Japan)
Hiromichi Akiyama, Mitsubishi Heavy Industries Ltd. (Japan)
Kazuaki Kishimoto, Mitsubishi Heavy Industries Ltd. (Japan)
Shin Utsunomiya, Japan Aerospace Exploration Agency (Japan)
Tomohiro Kamiya, Japan Aerospace Exploration Agency (Japan)
Kentaro Uesugi, Japan Synchrotron Radiation Research Institute (JASRI) (Japan)
Yoshio Suzuki, Japan Synchrotron Radiation Research Institute (JASRI) (Japan)


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