[10a-N403-1~10] 7.1 X-ray technologies

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[10a-N403-1] Evaluation of high order diffraction of the grating monochromator of S-path at BL-12A, the Photon Factory in a region above 600 eV

〇Tadashi Hatano^1,2, Masato Koike², Takeo Ejima^1,2 (1.SRIS, Tohoku Univ., 2.IMRAM, Tohoku Univ.)

Keywords:

soft X-ray,diffraction grating,multilayer

BL-12A was opened last year at the Photon Factory. It covers soft X-rays in a wide wavelength region with the S-path of a diffraction grating monochromator and the T-path of a double crystal monochromator. The S-path is composed of mirrors with grazing angles below 1.5° to cover up to 2 keV, while high order diffraction soft X-rays are expected to reach the endstation. We have evaluated the high order light by utilizing the spectral properties of the multilayer mirror and found that 25% of the second order light is contained at 600 eV.