Targets for inertial fusion are driven by external beams. Energy deposition of high-power laser and ion beams is considered for cold and hot dense matter. Collisional and resonance absorption of laser light is discussed as well as parametric instabilities driven by the ponderomotive force. Ion beam energy loss is treated in terms of binary collisions and within dielectric theory, and results are presented for cold and heated materials. Stopping of charged fusion products is also discussed. Stopping powers of heavy ion beams depend on the effective ion charge in the process of slowing-down, and cases of equilibrium as well as non-equilibrium charge states are discussed. Experiments on heavy ion stopping in dense plasma are reviewed.
Keywords: collisional laser absorption, resonance absorption, parametric instabilities, ponderomotive force, ion energy loss, stopping power, binary collisions, dielectric theory, effective ion charge, stopping experiments
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