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. 2003 Mar 26;100(8):4405–4408. doi: 10.1073/pnas.252782399

Figure 1.

Figure 1

Representative angle-dispersive x-ray diffraction patterns of (Mg0.39,Fe0.61)O at ≈98 GPa in a laser-heated DAC. A monochromatic beam (wavelength = 0.3311 Å) was used as the x-ray source and the diffracted x-rays were collected by an image plate (MAR345). The diffraction patterns were integrated with the FIT2D program (20), and the backgrounds were subtracted with PEAKFIT 4.0. (Mg0.39,Fe0.61)O is stable in the B1 structure up to 2,390 (±130) K and remains in the B1 structure after laser heating at 97 GPa and 300 K. Peak identifications are mw, (Mg0.39,Fe0.61)O in the B1 structure; and B2, NaCl in the cesium chloride structure (B2) (17).