Temperture and composition dependence of the high flux plasma sputtering yield of Cu-Li binary alloys
High flux deuterium plasma sputtering and ion beam experiments have been performed on Cu-Li alloys to determine if the reduction in copper erosion previously predicted and observed in low flux ion beam experiments occurs at particle fluxes representative of an RFP first wall or tokamak limiter. Partial sputtering yields of the copper and lithium components have been measured as a function of alloy composition and sample temperature using optical plasma emission spectroscopy, weight loss and catcher foil techniques. It is found that the lithium sputtering yield increases with increasing sample temperature while the copper yield decreases by as much as two orders of magnitude. The temperature required to obtain the reduction in copper erosion is found to be a function of bulk lithium concentration. Consequences of these experimental results for anticipated erosion/redeposition properties are calculated, and the Cu-Li alloy in found to compare favorably with conventional low-Z materials.
- Research Organization:
- Argonne National Lab., IL (USA); California Univ., Los Angeles (USA); Max-Planck-Institut fuer Plasmaphysik, Garching (Germany, F.R.)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6168500
- Report Number(s):
- CONF-860807-3; ON: DE87011349
- Resource Relation:
- Conference: 6. international workshop on inelastic ion surface collisions, Argonne, IL, USA, 25 Aug 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COPPER BASE ALLOYS
EROSION
SPUTTERING
FIRST WALL
LITHIUM BASE ALLOYS
DEUTERIUM IONS
EMISSION SPECTROSCOPY
HELIUM IONS
PLASMA CORE ASSEMBLY
REVERSE-FIELD PINCH
TEMPERATURE DEPENDENCE
ALLOYS
CHARGED PARTICLES
COPPER ALLOYS
EXPERIMENTAL REACTORS
FLUID FUELED REACTORS
GAS FUELED REACTORS
HOMOGENEOUS REACTORS
IONS
LITHIUM ALLOYS
PINCH EFFECT
REACTORS
RESEARCH AND TEST REACTORS
SPECTROSCOPY
THERMONUCLEAR REACTOR WALLS
ZERO POWER REACTORS
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