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Implosion Property of Cannonball Target at 10.6 µm Laser Wavelength

Compressed core density of a Cannonball target of inner pellet irradiation type at 10.6 µm laser wavelength was measured using spectrally resolved neon X-ray emission. The implosion simulations by HIMICO code agreed well with the experimental results and showed that the dominant force of implosion is hot electron driven ablation pressure. Comparison of the simulation and experimental results clarified that the core density was compressed to 200 mg/cc due to the truncation of high energy electrons. We show that the hot electron driven Cannonball target is a feasible scheme for high density compression at 10.6 µm CO2 laser.