Calibration studies of the carbon piezoresistive gauge

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Abstract
The calibrations, time responses, and Hugoniot for carbon piezoresistive gauges from two manufacturers are presented. These gauges exhibit a high sensitivity of about −20% resistance change per GPa at 0.5 GPa. Their equilibration times, when tested in fused silica, exceed 0.6 μsec below 0.5 GPa but improve at higher stresses and under better impedance matching conditions. They can be made of low atomic number materials, making them interesting candidates for studying the mechanical responses of materials to electron and x‐ray deposition.
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