Title :
Results of explosively-driven isentropic compression experiments (HEPP-ICE)
Author :
Tasker, D. ; Abeyta, F. ; Arellano, J. ; Dennis, D. ; Goforth, J. ; Herrera, D. ; king, J. ; McGuire, J. ; Oona, H. ; Rigg, P. ; Sena, F. ; Tabaka, L. ; Torres, D.
Author_Institution :
Los Alamos Nat. Lab., California Univ., xx, USA
Abstract :
Summary form only given. Using the Los Alamos high explosive pulsed power (HEPP) system, isentropic equation of state (EOS) data may be obtained for a wide range of materials. Current pulses with risetimes of /spl sim/500 ns and current densities exceeding 400 MA/m, create continuous magnetic loading of samples at megabar pressures. We will summarize the technique and the problems that had to be overcome to perform the HEPP-ICE experiments at these pressures. We will then present our EOS results obtained with the conventional Lagrangian analysis and the Hayes\´ "Backward" integration method, and compare the data with the published principal isentrope of OFHC copper.
Keywords :
compressive testing; current density; equations of state; high-pressure effects; pulsed power technology; shock wave effects; 1 Mbar; 500 ns; Hayes backward integration method; Lagrangian analysis; Los Alamos high explosive pulsed power system; current density; current pulse; isentropic compression; isentropic equation of state; magnetic loading; Copper; Earth Observing System; Equations; Explosives; Hydrodynamics; Ice; Laboratories; Lagrangian functions; Magnetic analysis; Plasma density;
Conference_Titel :
Plasma Science, 2004. ICOPS 2004. IEEE Conference Record - Abstracts. The 31st IEEE International Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-8334-6
DOI :
10.1109/PLASMA.2004.1340182
