external equipment / free-surface liquid metal flow / liquid lithium metal / pure lithium metal / activated tin products / chemical biological perspective / free-surface systems / nuclear and chemical reactions / law gives / high chemical activity / chemical toxicity / conductive liquid metal / tritium breeding product / free-surface liquid metal / energy confinement / chemical processing / poloidal liquid metal flow velocity / low energy electron / liquid metal regions / continuous axisymetric liquid metal flows / liquid metal / /