Bayreuth 1998 – scientific programme

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P: Plasmaphysik

P 19: Theorie III

P 19.3: Talk

Wednesday, March 11, 1998, 16:30–16:45, H 6

Nonlocal corrections to the Boltzmann equation for dense Plasmas — •K. Morawetz¹, P. Lipavskyý², and V. Spička² — ¹FB Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock — ²Institute of Physics, Academy of Sciences, Cukrovarnická 10, 16200 Praha 6, Czech Republic

A kinetic equation which combines the quasiparticle drift of Landau’s equation with a dissipation governed by a nonlocal and noninstant scattering integral in the spirit of Enskog corrections is derived [1,3]. The space shifts parallel finite-diameter corrections to collisions of hard spheres. The time shift is identified as the collision delay [2]. Consequences on current Boltzmann- simulations are discussed. The balance equations for the density, momentum and energy include quasiparticle contributions and the second order quantum virial corrections. The medium effects on binary collisions are shown to mediate the latent heat, i.e., an energy conversion between correlation and thermal energy [4]. This energy conversion is important for the energy conservation in dense plasma systems.

[1] V. Špička, P. Lipavský, K. Morawetz, Phys. Rev. B. 55, 5084 (1997); 5095 (1997).

[2] P. Danielewicz and S. Pratt, Phys. Rev. C 53, 249 (1996).

[3] P. Lipavský, K. Morawetz and V. Špička,, Rev. Mod. Phys., (1997), sub.

[4] V. Špička, P. Lipavský, and K. Morawetz, Phys. Lett. A, (1997), sub.