Abstract
Dust has been collected and analyzed from NSTX at PPPL and JT-60U at JAERI-Naka. A total quantity of 39mg of dust was collected from NSTX, and 170mg was obtained from sampling areas in JT-60U. Particle sizes determined by count-based measurements from all locations in NSTX averaged 3.27μm, and JT-60U dust has a similar average size of 3.08μm. Dust from both devices was composed mainly of carbon. Specific surface areas of two dust samples from JT-60U are 1.18m2/g and 0.28m2/g. NSTX samples contained insufficient mass for measuring specific surface area. Details from the analysis of each dust collection activity in NSTX and JT-60U are described in this paper.
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