Applications of the ion beam technique for investigations of hypervelocityimpacts

In the presentation we report on experiments at the Karlsruhe Light Ion Fac ility KALIF employing high-resolution laser-Doppler velocimetry. The scheme s of possible EOS experiments using interferometry and the dynamics and the limiting factors of the ablative hypervelocity launching are discussed as well as advantages of the ion beam technique for investigations in the fiel d of hypervelocity impacts and equations of state. So far, we have accelera ted aluminum foils of 10 to 30 mu m thickness to velocities beyond 12 km/s. Besides the beam power, the limiting factors for the launching are melting of the accelerated flyer plate as a result of shock-wave heating and the h eat transfer from the energy deposition zone. The experiments considered in clude the Hugoniot measurements and measurements at unloading of shock-comp ressed state down to the vaporization region. Parameters of shock waves tha t cause melting of aluminum, copper, molybdenum and titanium in release hav e been measured with a pulse proton beam on KALIF. A way of measurements in the vaporization region has been tested with explosive facilities. (C) 199 9 Elsevier Science Ltd. All rights reserved.