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

Princeton University. Plasma Physics Laboratory.

关键词: Magnetic Fields;    Liquid Metals;    70 Plasma Physics And Fusion Technology;    First Wall;    Temperature Gradients;   

DOI  :  10.2172/988893
RP-ID  :  PPPL-4553
RP-ID  :  DE-AC02-09CH11466
RP-ID  :  988893

美国|英语

来源: UNT Digital Library

【 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.