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![[Figure 2]](xd5002fig2mag.jpg)
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Figure 2
Photograph of a single crystal of magnesiowüstite-[(Mg0.75,Fe0.25)O] in the 〈110〉 orientation at 47 GPa and 300 K (central dark part of the picture). Both transmitted and reflected light source were used. Beveled diamonds with an inner culet of 150 µm and outer culet of 300 µm were used. Amorphous boron was used as an inner insert gasket and beryllium was used as an outer gasket to confine the amorphous boron. The sample chamber was originally about 100 µm in diameter. Use of the amorphous boron insert increases the thickness of the sample chamber (Lin et al., 2003  ), making X-ray emission spectroscopy with a laser-heated diamond anvil cell possible. A sandwich configuration comprising the sample and dried NaCl as the thermal insulator and pressure medium on both sides of the sample was used. Pressure was determined from the ruby fluorescence shift, EOS of NaCl or EOS of the sample. |
![[Figure 2]](xd5002fig2.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
