Results from Isentropic Compression Experiments (ICE)
- Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)
We have developed high explosive pulsed power (HEPP) methods to obtain accurate isentropic EOS data with the isentropic compression experiment (ICE). In the HEPP-ICE experiment, fast rising current pulses (with risetimes from 400 to 600 ns) at current densities of many MA/cm, create continuous magnetic compression of materials to Mbar pressures. The response of materials to this isentropic loading, as determined with VISAR measurements of free surfaces, provides the required isentropic EOS. Experiments on copper will be presented here. The data are analyzed using conventional Lagrangian and Backward techniques. In the present arrangement four samples can be studied at one time, but accurate EOS data can only be obtained from opposing sample pairs, because it is only these pairs that share the same magnetic fields.
- OSTI ID:
- 20875697
- Journal Information:
- AIP Conference Proceedings, Vol. 845, Issue 1; Conference: American Physical Society Topical Group conference on shock compression of condensed matter, Baltimore, MD (United States), 31 Jul - 5 Aug 2005; Other Information: DOI: 10.1063/1.2263568; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Isentropic compression of metals, at multi-megabar pressures, using high explosive pulsed power