Self-regulated plasma heat flux mitigation due to liquid Sn vapor shielding

G.G. van Eden, T.W. Morgan, D.U.B. Aussems, M.A. van den Berg, K. Bystrov, M.C.M. van de Sanden

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Abstract

A steady-state high-flux H or He plasma beam was balanced against the pressure of a Sn vapor cloud for the first time, resulting in a self-regulated heat flux intensity near the liquid surface. A temperature response of the liquid surface characterized by a decoupling from the received heating power and significant cooling of the plasma in the neutral Sn cloud were observed. The plasma heat flux impinging on the target was found to be mitigated, as heat was partially dissipated by volumetric processes in the vapor cloud rather than wholly by surface effects. These results motivate further exploration of liquid metal solutions to the critical challenge of heat and particle flux handling in fusion power plants.
Original languageEnglish
Article number135002
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Volume116
Issue number13
DOIs
Publication statusPublished - 1 Apr 2016

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