Observation of Dust Production During Carbon Pellet Ablation in W7-AS

Introduction. A number of theoretical and experimental investigations [1-3] shows that a thermal blow on a solid carbon surface can cause its brittle destruction with emission of microparticles of 0.01-10 µm in diameter. It was supposed earlier [1], that such effect in plasma physics can be observed during ramp-down in tokamaks. However, integrated photos of light emission, which are obtained during ablation of carbon pellets injected into the high