Microscopic Motion of Liquid Metal Plasma Facing Components In A Diverted Plasma

Jaworski, M A ; Morley, N B ; Abrams, T ; Kaita, R ; Kallman, J ; Kugel, H ; Majeski, R

关键词: FIRST WALL;    LIQUID METALS;    MAGNETIC FIELDS;    MAGNETOHYDRODYNAMICS;    PLASMA;    STABILITY;    TEMPERATURE GRADIENTS;    THIN FILMS Liquid Plasma Facing;   

DOI  :  10.2172/988893
RP-ID  :  PPPL-4553
PID  :  OSTI ID: 988893
Others  :  TRN: US1007439

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 摘 要 】

Liquid metal plasma facing components (PFCs) have been identified as an alternative material for fusion plasma experiments. The use of a liquid conductor where significant magnetic fields are present is considered risky, with the possibility of macroscopic fluid motion and possible ejection into the plasma core. Analysis is carried out on thermoelectric magnetohydrodynamic (TEMHD) forces caused by temperature gradients in the liquid-container system itself in addition to scrape-off-layer currents interacting with the PFC from a diverted plasma. Capillary effects at the liquid-container interface will be examined which govern droplet ejection criteria. Stability of the interface is determined using linear stability methods. In addition to application to liquidmetal PFCs, thin film liquidmetal effects have application to current and future devices where off-normal events may liquefy portions of the first wall and other plasma facing components.