EQUATION OF STATE INFORMATION FROM BEAM-TARGET INTERACTION EXPERIMENTS AT KALIF

Intense ion beams can be used to generate ultrahigh pressures in conde nsed matter. Light-ion beams generated at the Karlsruhe Light Ion Faci lity (KALIF) typically have a focus of less than 1-cm diameter. The ma ximum power density at KALIF achieved so far is of the order of 1 TW/c m(2). In the energy deposition zone of the targets, the 1.5-MeV proton s of the KALIF beam deposit energy of the order of 100 TW/g or 5 MJ/g. A strongly coupled, hot, dense plasma is thus created by the action o f a light ion beam on matter. The high pressure generated in this regi on has been used to accelerate thin foils to velocities up to 12.5 km/ s. A successful interpretation of these experiments can serve as a che ck of theoretical models and of the equation of state (EOS) data. The present paper contains an investigation of the hydrodynamics of thin a luminum foil accelerated by light ion beams at KALIF using B-theta-dio de. The peak power density in these experiments was 0.15 +/- 0.05 TW/c m(2). The results of simulations depend mainly on two factors: power d ensity evolution at the target and the EOS for the strongly coupled de nse and hot plasma. The beam power density evolution has been carefull y remeasured recently. It turned out that the available EOS data do no t reproduce experimental results satisfactorily. We have formulated a simple EOS formula in a modified Mie-Gruneisen form. We assume the Gru neisen parameter to be a function of temperature and density. The para meters of this EOS have been adjusted to reproduce experiments at KALI F. In the present paper analysis of beam-target interaction experiment s at KALIF is presented using our analytic EOS. We show that such expe riments can give information on EOS data in the region of strongly cou pled plasma.