Generation of a 400 GPa pressure in water using converging strong shock waves
- Physics Department, Technion, 32000 Haifa (Israel)
Results related to the generation of an extreme state of water with pressure up to (4.3 {+-} 0.2){center_dot}10{sup 11} Pa, density up to 4.2 {+-} 0.1 g/cm{sup 3}, and temperature up to 2.2 {+-} 0.1 eV in the vicinity of the implosion axis of a converging strong shock wave are reported. The shock wave was produced by the underwater electrical explosion of a cylindrical Cu wire array. A {approx}8 kJ pulse generator with a current amplitude {<=}550 kA and rise time of 350 ns was used to explode arrays having varying lengths, radii, and number of wires. Hydrodynamic numerical simulations coupled to the experimental data of the shock wave propagation in water, rate of energy deposition into the array, and light emission from the compressed water in the vicinity of the implosion axis were used to determine the pressure, density, and temperature profiles during the implosion. Results of a comparison between these parameters obtained with the SESAME and quantum molecular dynamics data bases of equation of state for water are reported as well. Also, the dependences of the maximal pressure in the vicinity of the implosion axes on the array radius and the deposited energy density per unit length are reported.
- OSTI ID:
- 21546961
- Journal Information:
- Physics of Plasmas, Vol. 18, Issue 6; Other Information: DOI: 10.1063/1.3599425; (c) 2011 American Institute of Physics; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
EQUATIONS OF STATE
EXPLOSIONS
IMPLOSIONS
MOLECULAR DYNAMICS METHOD
PLASMA SIMULATION
PRESSURE RANGE GIGA PA
SHOCK WAVES
WATER
CALCULATION METHODS
EQUATIONS
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PRESSURE RANGE
SIMULATION