Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1567502 | Journal of Nuclear Materials | 2009 | 4 Pages |
Abstract
Velocity distribution functions of dust particles of various sizes are simulated in different regions of a tokamak using the DUSTT code. It is shown that dust particles accelerated by plasma flows can reach very high speed >1 km/s at the terminal stages of vaporization. Collisions of beryllium and tungsten dust particles with beryllium wall are modeled with the LS-DYNA material structural analysis code. It is demonstrated that the collisions at high speed ∼1 km/s can cause significant damage to the wall or complete dust destruction depending on dust and wall material parameters.
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Authors
R.D. Smirnov, S.I. Krasheninnikov, A.Yu. Pigarov, D.J. Benson, M. Rosenberg, D.A. Mendis,