Kiel 2004 – wissenschaftliches Programm
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P: Plasmaphysik
P 17: Postersitzung: Plasma-Wand-Wechselwirkung III, Grundlegende Probleme Theorie II, Schwerionen- Laserplasmen II, Dichte Plasmen II
P 17.23: Poster
Mittwoch, 10. März 2004, 17:45–19:30, Foyer
Electrical Resistivity of High Energy Density Matter Generated by Intense Heavy Ion Beams — •Serban Udrea1, Carmen Constantin2, Eduard Dewald2, Joachim Jacoby3, Naeem Tahir4, Dmitry Varentsov1, and Dieter H.H. Hoffmann1,4 — 1Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt — 2Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550-9234, USA — 3Institut für Angewandte Physik, Universität Frankfurt, Robert-Mayer-Str. 2-4, 60325 Frankfurt am Main — 4Gesellschaft für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt
Intense heavy ion beams are an excellent tool to produce large volumes of high energy density (HED) matter. The thermodynamic and transport properties of such systems are of interest for fundamental as well as for applied research. In this work we present measurements of the electrical resistivity of metallic wires heated by intense heavy ion beams. The targets (10 mm long, 0.25 mm diameter) were made of lead, copper and silver. Oxygen and argon 1 µs long ion beam pulses with intensities up to 6· 1010 particles and energies of 200 and 300 AMeV, respectivelly have been used as drivers. The high energy densities deposited in the targets (up to 1 kJ/g) have been achieved by focussing the ion beams with a high current plasma lens down to a diameter of 0.7−1.0 mm FWHM. The measurements are compared with results obtained by 2D simulations of the hydrodynamic response of the target material and the electrical current flow calculations.