X-ray Polarization Ratio of Graphite Crystal Monochromator

盧火鐵(Water Lur)；陳瑞虹(R. Chen)

Chinese Journal of Physics

23卷2期（1985 / 07 / 01）

166 - 170

英文

The x-ray polarization ratios of graphite monochromator are obtained by measuring its σ- and n-component of the x-ray after reflection from the monochromator. Both the σ and π polarizations are measured by x-ray anomalous transmission of perfect crystal. The results are 0.910(3) for Cu Kα and 0.952(10) for Mo Kα radiation. The diffraction data of Cu Kα and Mo Kα radiations show that the polarization status has a tendancy of moving away from an ideally perfect crystal value to mosaic crystal value as the wavelength of the radiation becomes shorter.