Abstract
Plasma shielding is an important concept to study if the material damage could be suppressed with plasma layer properly prepared by absorbing the incoming plasma flux onto a divertor target in MFE or the first wall in IFE reactors. First experimental evidence of this effect is reported. Two plasma plumes (n∼ 1012/cm3, Te ∼ 1 eV) are created with two laser beams. The laser ablation plasma plumes are created at laser energy density up to 10 J/cm2 and are crossed each other. 12∼59 % of the incoming plasma particles are shielded with the collisions of the other plasma plume. By observing the material dependence of colliding effects, the effect to plasma shielding is discussed. c © 2012 The Japan Society of Plasma Science and Nuclear Fusion Research
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