TY - JOUR
T1 - Development of a flat-field spectrograph with a wide-band multilayer grating and prefocusing mirror covering 2-4 keV
AU - Imazono, T.
AU - Koike, M.
AU - Hasegawa, N.
AU - Koeda, M.
AU - Nagano, T.
AU - Sasai, H.
AU - Oue, Y.
AU - Yonezawa, Z.
AU - Kuramoto, S.
AU - Terauchi, M.
AU - Takahashi, H.
AU - Handa, N.
AU - Murano, T.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - A flat-field spectrograph equipped with a wide-band multilayer grating and prefocusing mirror covering 2-4 keV without any mechanical movement has been developed. To realize this, a new multilayer structure consisting of W and B4C layers has been invented, which enhances the diffraction efficiency of the grating over the whole energy range at a fixed angle of incidence as well as the reflectivity of the prefocusing mirror. The multilayer has been deposited on a laminar-type varied-line-spacing holographic replica grating and a spherical mirror substrate. The diffraction efficiency of the multilayer grating varies between 1.2% and 3.3% at 88.65° in the 2.1-4.0 keV range. Also the reflectivity of the prefocusing mirror varies between 2.7% and 12% at 88.00° in the same range. The overall throughput of the spectrograph with the multilayer optics is 104 times higher than that of gold-coated optics.
AB - A flat-field spectrograph equipped with a wide-band multilayer grating and prefocusing mirror covering 2-4 keV without any mechanical movement has been developed. To realize this, a new multilayer structure consisting of W and B4C layers has been invented, which enhances the diffraction efficiency of the grating over the whole energy range at a fixed angle of incidence as well as the reflectivity of the prefocusing mirror. The multilayer has been deposited on a laminar-type varied-line-spacing holographic replica grating and a spherical mirror substrate. The diffraction efficiency of the multilayer grating varies between 1.2% and 3.3% at 88.65° in the 2.1-4.0 keV range. Also the reflectivity of the prefocusing mirror varies between 2.7% and 12% at 88.00° in the same range. The overall throughput of the spectrograph with the multilayer optics is 104 times higher than that of gold-coated optics.
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U2 - 10.1088/1742-6596/425/15/152008
DO - 10.1088/1742-6596/425/15/152008
M3 - Conference article
AN - SCOPUS:84876224437
VL - 425
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - PART 15
M1 - 152008
T2 - 11th International Conference on Synchrotron Radiation Instrumentation, SRI 2012
Y2 - 9 July 2012 through 13 July 2012
ER -