S. Ratynskaia et al 2009 Nucl. Fusion 49 122001 doi:10.1088/0029-5515/49/12/122001
S. Ratynskaia1, H. Bergsåker2, B. Emmoth3, A. Litnovsky4, A. Kreter4 and V. Philipps4
Show affiliationsThe aim of this letter is to demonstrate the feasibility and potential of the novel in situ dust diagnostic method—capture by aerogel targets. Aerogel, a highly porous material with a density of a few tens of kg m−3, allows capturing of dust particles present during the discharge without destroying them. The first exposures in the TEXTOR scrape-off layer plasma showed that such targets are able to capture both slow and fast particles with sizes in the range from submicrometre to ~100 µm. The technique provides information on dust velocity and size distribution as well as dust flux estimates. The composition and texture of the captured dust can also be studied in detail to shed light on dust formation processes.
52.27.Lw Dusty or complex plasmas; plasma crystals
52.70.-m Plasma diagnostic techniques and instrumentation
52.55.Fa Tokamaks, spherical tokamaks
52.40.Hf Plasma-material interactions; boundary layer effects
Soft matter, liquids and polymers
Issue 12 (December 2009)
Received 6 June 2009, accepted for publication 12 October 2009
Published 26 October 2009
S. Ratynskaia et al 2009 Nucl. Fusion 49 122001
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