GHz Ultrasonic Velocity Measurement in Diamond Anvil Cell

Ultrasonic interferometry and X-ray measurements on MgO in a new diamond anvil cell

Our knowledge of the Earth’s structure is based upon seismological data. Comparison between laboratory data and seismological data can provide information about the chemistry and mineralogy of Earth’s interior. Silicate perovskite and (Mg,Fe)O are likely to be important constituents of the lower mantle (e.g., Anderson 1989). Because of its wide stability field and its simple rocksalt structure ...

Confocal Microscopy to Measure Volume in a Diamond Anvil Cell

Confocal microscopy is a potentially powerful technique for obtaining equation-of-state (EOS) data for fluids in a diamond anvil cell. Unlike conventional microscopy, a confocal microscope scans the cell in three dimensions. From the intensity profile of the reflected laser light, we calculated the index of refraction and optical thickness of the sample contained in the cell. These measurements...

Amorphous boron gasket in diamond anvil cell research

Recent advances in high-pressure diamond anvil cell experiments include high-energy synchrotron x-ray techniques as well as new cell designs and gasketing procedures. The success of high-pressure experiments usually depends on a well-prepared sample, in which the gasket plays an important role. Various gasket materials such as diamond, beryllium, rhenium, and stainless steel have been used. Her...

Ruby pressure scale in a low-temperature diamond anvil cell

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How to detect melting in laser heating diamond anvil cell