TY - JOUR
T1 - Temperature dependence of liquid-lithium sputtering from oblique 700 eV He ions
AU - Allain, J. P.
AU - Coventry, M. D.
AU - Ruzic, D. N.
N1 - Funding Information:
We would like to acknowledge insightful discussions with J.N. Brooks, A. Hassanein, R.P. Doerner, M.J. Baldwin and R. Averback. Funding from DOE/ALPS grant # DE-FG02-99ER54515 is also acknowledged.
PY - 2003/3
Y1 - 2003/3
N2 - The lithium-sputtering yield of liquid lithium as a function of sample temperature has been measured in the ion-surface interaction experiment (IIAX). Lithium sputtering is measured for D+, He+ and Li+ bombardment at energies between 100 and 1000 eV at 45° incidence. In this work VFTRIM-3D is used to provide a qualitative physical picture of mechanisms responsible for the temperature dependence of liquid-lithium sputtering. The present study is done for 700 eV He+ bombardment of liquid lithium at 45° incidence with respect to the target normal. The lithium-sputtering yield, after evaporation is taken into account, is found to increase almost an order of magnitude when the target temperature is increased from the melting point up to roughly 410 °C. The deposited energy distribution near the liquid-lithium surface is found to play a significant role in explaining the observed enhanced lithium sputtering as well as the temperature dependence of the surface binding energy.
AB - The lithium-sputtering yield of liquid lithium as a function of sample temperature has been measured in the ion-surface interaction experiment (IIAX). Lithium sputtering is measured for D+, He+ and Li+ bombardment at energies between 100 and 1000 eV at 45° incidence. In this work VFTRIM-3D is used to provide a qualitative physical picture of mechanisms responsible for the temperature dependence of liquid-lithium sputtering. The present study is done for 700 eV He+ bombardment of liquid lithium at 45° incidence with respect to the target normal. The lithium-sputtering yield, after evaporation is taken into account, is found to increase almost an order of magnitude when the target temperature is increased from the melting point up to roughly 410 °C. The deposited energy distribution near the liquid-lithium surface is found to play a significant role in explaining the observed enhanced lithium sputtering as well as the temperature dependence of the surface binding energy.
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U2 - 10.1016/S0022-3115(02)01371-5
DO - 10.1016/S0022-3115(02)01371-5
M3 - Conference article
AN - SCOPUS:0037346914
SN - 0022-3115
VL - 313-316
SP - 641
EP - 645
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - SUPPL.
T2 - Plasma - Surface Interactions in Controlled Fusion Devices
Y2 - 26 May 2002 through 31 May 2002
ER -