Unsteady heating of metallic particles in a rarefied plasma

摘要: Analytical results are presented concerning the unsteady heating of a metallic spherical particle innnersed in rarefied plasma. The show that tinte periods required for solid-phase heating, melting, liquid-phase and evaporation all proportional to radius. For estimating time needed additional heat transfer rmechanism due thermionic emission front surface is usually negligible since temperatures heated plasma are, general, compartively low during those steps. Thermionic assumes its effect only as higher involved (e.g., than 4000 K), while radiation loss shows effects at much lower wall temperatures. As temperature comparatively low, may restrict such value on overall can he neglected complete refractor y particles becomes impossible. uncertainty calculation associated with choice effective work function material.