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Article Dans Une Revue Journal of Nuclear Materials Année : 2015

Characterization of dust particles produced in an all-tungsten wall tokamak and potentially mobilized by airflow

Résumé

At the starting of the shutdown of the AUG (ASDEX Upgrade: Axially Symmetric Divertor EXperiment) German tokamak, we collected particles deposited on the divertor surfaces by means of a dedicated device called “Duster Box”. This device allows to collect the particles using a controlled airflow with a defined shear stress. Consequently, the particles collected correspond to a potentially mobilizable fraction, by an airflow, of deposited dust. A total of more than 70,000 tungsten particles was, analysed showing a bimodal particle size distribution with a mode composed of flakes at 0.6 μm and a mode composed of spherical particles at 1.8 μm.
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Dates et versions

hal-01134925 , version 1 (24-03-2015)

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Citer

A. Rondeau, Samuel Peillon, Audrey Roynette, Jean-Christophe Sabroux, Thomas Gelain, et al.. Characterization of dust particles produced in an all-tungsten wall tokamak and potentially mobilized by airflow. Journal of Nuclear Materials, 2015, 463 (48782), pp.873-876. ⟨10.1016/j.jnucmat.2014.12.051⟩. ⟨hal-01134925⟩
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