Optical measurements of strongly-shocked water
Abstract
We have performed laser-driven shock wave experiments to study strong shocks in water. Using the Omega and Phebus laser facilities we have produced shocks in water targets up to 10 Mbar pressure. The shocks were generated by irradiating an aluminum pusher with the laser and then they were transmitted into the water sample. We used a streaked VISAR (Velocity Interferometer System for Any Reflector) optical diagnostic operating at 532 nm to measure the shock speed in the water, as well as the transit time of the shock across a small step on the rear of the aluminum pusher. This allowed us to determine the shock speed in the pusher as well as in the sample from a single streak record. Preliminary data indicates that the shock front reflectance begins to increase at a pressure around 1.4 Mbar.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2000
- Bibcode:
- 2000APS..DPPMO2013C