Friday, December 21, 2012

High pressure record for neutrons broken again!

The Geophysical Laboratory neutron group has tested a new design of a poly-crystalline diamond supported diamond cell (PCD-DAC), that has allowed diffraction data to be collected at 78.3 GPa.
The new device uses a massively supported anvil designed by Boehler & Guthrie, and retains optical access to the sample.

The data quality in the cell is excellent (see previous post for example of a short, 10 minute, dataset).

Two anvils and gasket after eventual "blowout" one of the anvils was reduced to a small pile of diamond dust.   

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