Abstract
We report some preliminary measurement of the erosion rate of plasma dumps when bombarded with 100 keV He+ ions at high power density (∼ 1 MW/m2). The expected erosion rates, based on measurements of He blistering that were made at lower power density (∼ 0.3 MW/m2), indicate a potentially serious problem for fusion reactors. Our tests use a reactorlike power density and produce He blisters at a rate that is slower than predicted by 2 to 4 orders of magnitude, depending on the temperature of the molybdenum target.
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Barr, W.L., Wilson, K.L. Experimental results of the erosion of molybdenum due to blistering by He+ bombardment. J Fusion Energ 4, 87–91 (1985). https://doi.org/10.1007/BF01051641
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DOI: https://doi.org/10.1007/BF01051641