Atomic scattering factor of the ASTRO-H (Hitomi) SXT reflector around the gold's L edges.
The atomic scattering factor in the energy range of 11.2-15.4 keV for the ASTRO-H Soft X-ray Telescope (SXT) is reported. The large effective area of the SXT makes use of photon spectra above 10 keV viable, unlike most other X-ray satellites with total-reflection mirror optics. Presence of gold's L-edges in the energy band is a major issue, as it complicates the function of the effective area. 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 beam-line 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 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.
Naomichi
N
Kikuchi
Sho
S
Kurashima
Manabu
M
Ishida
Ryo
R
Iizuka
Yoshitomo
Y
Maeda
Takayuki
T
Hayashi
Takashi
T
Okajima
Hironori
H
Matsumoto
Ikuyuki
I
Mitsuishi
Shigetaka
S
Saji
Toshiki
T
Sato
Sasagu
S
Tachibana
Hideyuki
H
Mori
Finn
F
Christensen
Nicolai
N
Brejnholt
Kiyofumi
K
Nitta
Tomoya
T
Uruga