29 August 2017 The Hitomi (ASTRO-H) Soft X-ray Telescope (SXT): current status of calibration
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We report the atomic scattering factor in the 11.2–15.4 keV for the ASTRO-H Soft X-ray Telescope (SXT)9 obtained in the ground based measurements. The large effective area of the SXT covers above 10 keV. In fact, the flight data show the spectra of the celestical objects in the hard X-ray band. In order to model the area, the reflectivity measurements in the 11.2–15.4 keV band with the energy pitch of 0.4 – 0.7 eV were made in the synchrotron beamline Spring-8 BL01B1. We obtained atomic scattering factors f1 and f2 by the curve fitting to the reflectivities of our witness sample. The edges associated with the gold′ s L-I, II, and III transitions are identified, of which the depths are found to be roughly 60% shallower than those expected from the Henke’s atomic scattering factor.
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Yoshitomo Maeda, Yoshitomo Maeda, Naomichi Kikuchi, Naomichi Kikuchi, Sho Kurashima, Sho Kurashima, Manabu Ishida, Manabu Ishida, Ryo Iizuka, Ryo Iizuka, Takayuki Hayashi, Takayuki Hayashi, Takashi Okajima, Takashi Okajima, Hironori Matsumoto, Hironori Matsumoto, Ikuyuki Mitsuishi, Ikuyuki Mitsuishi, Shigetaka Saji, Shigetaka Saji, Toshiki Sato, Toshiki Sato, Sasagu Tachibana, Sasagu Tachibana, Hideyuki Mori, Hideyuki Mori, Finn Christensen, Finn Christensen, Nicolai Brejnholt, Nicolai Brejnholt, Kiyofumi Nitta, Kiyofumi Nitta, Tomoya Uruga, Tomoya Uruga, } "The Hitomi (ASTRO-H) Soft X-ray Telescope (SXT): current status of calibration", Proc. SPIE 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII, 103990Q (29 August 2017); doi: 10.1117/12.2275605; https://doi.org/10.1117/12.2275605


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