Nonlinear heavy-ion stopping in plasmas

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In the context of ion-driven-inertial confinement fusion (ICF) the stopping power of ions in plasmas is crucial for the target design. For the stopping of heavy ions with high non-equilibrium charge states and nonlinear ion–target coupling, the theoretical description has to go beyond the standard approaches. To investigate nonlinear heavy-ion stopping in classical systems we performed both molecular dynamics (MD) simulations and Vlasov simulations. At nonlinear coupling we observed a dependence of the stopping power on the ion charge like Z x, x≲1.5 and a screening length which now depends on Z and increases above the Debye length.