Mitsui Takaya, Imai Yasuhiko, Masuda Ryo, Seto Makoto, Mibu Ko
Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan.
Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
J Synchrotron Radiat. 2015 Mar;22(2):427-35. doi: 10.1107/S1600577514028306. Epub 2015 Feb 14.
Energy-domain (57)Fe polarization-dependent synchrotron radiation Mössbauer spectroscopy was developed by using a diamond X-ray phase plate and an iron borate nuclear Bragg monochromator. The former controls the polarization of the incident synchrotron radiation X-rays and the latter filters the (57)Fe-Mössbauer radiation with a narrow bandwidth of ∼3.4 Γ0 (Γ0 ≃ 4.7 neV: natural linewidth of the (57)Fe nucleus) from the broadband synchrotron radiation. The developed nuclear diffraction optics allowed (57)Fe-Mössbauer studies to be performed with various polarization states, i.e. linear polarization, circular polarization and non-polarization. In this paper, the spectrometer system, beam characterization, performance-test experiments and a grazing-incidence Mössbauer measurement of an isotope-enriched ((57)Fe: 95%) iron thin film are described.
通过使用金刚石X射线相位板和硼酸铁核布拉格单色仪，开发了能量域（57）Fe偏振相关同步辐射穆斯堡尔光谱。前者控制入射同步辐射X射线的偏振，后者从宽带同步辐射中滤出带宽约为3.4Γ0（Γ0≃4.7 neV：（57）Fe核的自然线宽）的（57）Fe穆斯堡尔辐射。所开发的核衍射光学器件使（57）Fe穆斯堡尔研究能够以各种偏振态进行，即线偏振、圆偏振和非偏振。本文描述了光谱仪系统、光束特性、性能测试实验以及对同位素富集（（57）Fe：95%）铁薄膜的掠入射穆斯堡尔测量。
