Bulk superheating of solid KBr and CsBr with shock waves
- 1 November 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 71 (18) , 2931-2934
- https://doi.org/10.1103/physrevlett.71.2931
Abstract
We have observed bulk solid superheating of the order of 650 K and persisting for Δt>500 ns in shocked single crystals of KBr at 22 to 33 GPa and CsBr at 30 to 42 GPa. These experiments use nanosecond-resolution, twelve-channel optical pyrometry to measure the temperature of the advancing shock front in the crystal, and the rarefaction-overtake technique to simultaneously measure sound velocity. This novel combination of measurements allows a virtually continuous determination of Hugoniot temperature versus pressure or density for transparent crystals.Keywords
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