HEAVY-ION FUSION-RESEARCH IN SPAIN

The indirect-direct illumination scheme has been investigated, and sim ulations were performed using the radiation-hydrodynamics code SARA, s howing good agreement with experiments performed at CEL-V Limeil (Fran ce) in the PHEBUS laser. The use of an externally guided implosion of the fuel has been suggested, where two pellets, each being accelerated from opposite mouths of a cannon barrel, will collide and implode in a central cavity. A detailed opacity model (JIMENA-DCA) has been devel oped that treats absorption bands that result from many-particle confi gurations using the original Mozskowski's formalism; our average ion m odel (JIMENA-AI) also includes that model. Frequency-dependent opaciti es for intermediate- and high-Z plasmas have been computed and tested through the WORKOP series. An adaptive mesh scheme has been implemente d in the two-dimensional ARWEN code based on an implicit Riemann solve r and part of a Lagrangian flux-corrected transport staggered-mesh (RM FCT) scheme. The code can handle several materials on a Eulerian mesh, and includes simple ion and laser energy sources. A two-dimensional c ode for radiation-hydrodynamics (MULTI-2D) has been developed that use s non-structured triangular grids, and includes arbitrary Eulerian-Lag rangian hydrodynamics, radiation transport by discrete ordinates, and laser or heavy ion beam deposition. The inventory and radiological cod e ACAB has been extensively used to determine the activation in inerti al fusion reactors and has been improved to include pulsed regimes and fission process. A molecular dynamics code has been developed in coll aboration with LLNL to study neutron damage in SIG. DENIM is actively participating as one of the main proponents of the European Heavy Ion Ignition Facility of the European authorities, together with GSI Darms tadt, ENEA Frascatti and KfK Karlsruhe.