Erosion properties of liquid phase tin due to D^+ and He^+ bombardment
Abstract
The erosion properties of liquid tin at temperatures from 240 to 400 ^oC due to irradiation by 300-1000 eV D^+ and He^+ at an oblique angle have been measured using the Ion-Surface InterAction Experiment (IIAX); these properties include the temperature-dependent absolute sputtering yield, oxide effects, and secondary ion sputtered fraction. IIAX brings a velocity- and neutral- filtered ion beam onto a solid or liquid target at 45^o incidence. The absolute sputtering yield and evaporative flux are measured via a quartz-crystal microbalance (QCM). Flowing liquid tin is being examined for use as a plasma-facing component (PFC) in next-step fusion devices due to its relatively low vapor pressure and melting point. A comparison of this and previous data^1 on liquid lithium, another candidate metal, as well as VFTRIM-3D^2 modeling for both systems was performed. Also discussed is the impact on PFC design due to the erosion characteristics of liquid tin. ^1J.P. Allain, D.N. Ruzic, and M.R. Hendricks, J. Nucl. Mater. 290-293 (2001) 180. ^2D. N. Ruzic, Nuclear Instruments and Methods in Physics Research B47 (1990) 118.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- November 2002
- Bibcode:
- 2002APS..DPPGP1148C