Impurity transport in edge plasmas with application to liquid walls

摘要: The transport of impurity ions in a magnetically confined plasma is studied the region between their origin at material surface and core as defined by closed magnetic flux surfaces. focus physics understanding results two-dimensional (2-D) modeling neutrals. A simple one-dimensional model introduced to identify key processes illustrate how such affect core-edge level. 2-D simulation gives detailed scaling level with parameters anomalous radial diffusion, hydrogen–plasma recycling, power flux, density. are obtained for slab tokamak, but changing connection length, other types devices can be inferred. Lithium fluorine impurities considered explicitly examples low moderate charge-state number, Z, liquid wall materials; trends found these cases provide guidance behavior o...