Simultaneous measurements of shock velocity and optical reflectance at 1064, 808, and 404 nm of a high pressure shock front propagating through liquid deuterium show a continuous increase in reflectance from below and saturating at in the range of shock velocities from 12 to (pressure range 17–50 GPa). The high optical reflectance is evidence that the shocked deuterium reaches a conducting state characteristic of a metallic fluid. Above shock velocity (50 GPa pressure) reflectance is constant indicating that the transformation is substantially complete.
- Received 9 November 1999
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