Measurements of Ablation Pressure and Mass Ablation Rate Using a Target Pendulum and a Thin Foil Target at 10 μm Laser Wavelength

概要

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The ablation pressure and the mass ablation rate for a 10 μm CO_2 laser were measured using two methods: a ballistic target pendulum and shifted X-ray emission images which are equivalent to X-ray back-lighting. The measured ablation pressure was 10 Mbar and the mass ablation rate was 10^6 g/cm^2・sec at the absorbed laser intensity of 5×10^<13> W/cm^2. Comparing the ablation mass rate measured by the pendulum with that derived from the penetration depth of the hot electrons using K_α line emission, we could identify the hot electron driven ablation as the dominant process.
社団法人応用物理学会の論文
1983-04-20