Fe polarization dependent synchrotron Mssbauer spectroscopy using a diamond phase plate and an iron borate nuclear Bragg monochromator

核モノクロメーターとダイアモンド移相子を用いた放射光メスバウアー偏光分光

三井 隆也; 今井 康彦*; 増田 亮*; 瀬戸 誠*; 壬生 攻*

Mitsui, Takaya; Imai, Yasuhiko*; Masuda, Ryo*; Seto, Makoto*; Mibu, Ko*

Energy domain Fe polarization dependent synchrotron radiation Mssbauer 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 Fe Mssbauer radiation with a narrow bandwidth of 15 neV from the broadband synchrotron radiation. The developed nuclear diffraction optics allowed Fe Mssbauer studies to beperformed with various polarization states. In this paper, the spectrometer system, beam characterization, performance test experiments and a grazing incidence Mssbauer measurement of an isotope enriched iron thin film are described.