Figure 2
57Fe-SR-Mössbauer spectrometer installed at BL11XU of SPring-8. (a) External view and (b) nuclear diffraction optical system. SR: synchrotron radiation from the undulator of BL11XU; DM: double-crystal monochromator, Si 111 reflections; HRM: high energy resolution monochromator, nested-type channel-cut Si 511 × Si 975 reflections; S1: slit 1.0 mm (H) × 1.0 mm (V); DPP: diamond phase plate, C 220 reflection in Laue geometry; D1: PIN photodetector; NBM: nuclear Bragg monochromator, 57FeBO3 111 reflection near the Néel point; Hex: external magnetic field, 150 Oe; S2: slit 1.0 mm (H) × 0.5 mm (V); D2: NaI(Tl) scintillation detector. |