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(IFP/19) Implosion Physics, Alternative Targets Design and Neutron Effects on Inertial Fusion Systems

G. Velarde¹⁾, J. M. Perlado¹⁾, J. M. Martínez-Val¹⁾, E. Mínguez¹⁾, M. Piera¹⁾, J. Sanz¹⁾, P. Velarde¹⁾, E. Alonso²⁾, E. Domínguez¹⁾, J. G. Rubiano¹⁾, J. M. Gil¹⁾, J. G. del Rio¹⁾, D. Lodi¹⁾, L. Malerba¹⁾, J. Marian³⁾, P. Martel¹⁾, F. Ogando¹⁾, J. Prieto¹⁾, S. Reyes³⁾, M. Salvador¹⁾, P. Sauvan¹⁾, M. Velarde^1)
 
1) Instituto de Fusión Nuclear (DENIM), ETSII, Universidad Politécnica de Madrid, Spain
²⁾ present address: Polytechnique University Zürich, Switzerland
³⁾ present address: Lawrence Livermore National Laboratory (LLNL), USA

Abstract.  A new radiation transport code has been coupled with an existing multimaterial fluidynamics code using Adaptive Mesh Refinement (AMR) and its testing is presented, solving ray effect and shadow problems in SN classical methods. Important advances in atomic physics, opacity calculations and NLTE calculations, participating in significant experiments (LULI/France), have been obtained. Our new 1D target simulation model allows considering the effect of inverse Compton scattering in DT_x targets (x < 3%) working in a catalytic regime, showing the effectiveness of such tritium-less targets. Neutron activation of all natural elements in IFE reactors for waste management and that of target debris in NIF-type facilities have been completed. Pulse activation in structural walls is presented with a new modeling. Tritium atmospheric dispersion results indicate large uncertainties in environmental responses and needs to treat the two chemical forms. We recognise recombination barriers (metastable defects) and compute first systematic high-energy displacement cascade analysis in SiC, and radiation damage pulses by atomistic models in metals. Using Molecular Dynamics we explain the experimental evidence of low-temperature amorphization by damage accumulation in SiC.

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