Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Regular Articles
Agglomeration Process of Carbon Dusts in Laboratory Plasmas
Yoshito HASEGAWANaoko ASHIKAWAAtsushi M. ITOTakahiro KENMOTSUYudai MINAMIHiroaki NAKAMURAMasaki NISHIURAMotoi WADA
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2013 Volume 8 Pages 2402075

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Abstract

Micro-meter size carbon dusts have been formed in a 70 mm diameter, 370 mm long plasma container after running a 16 hour steady state Ar discharge. The formed carbon dusts have been observed by a scanning electron microscope (SEM) to identify their surface structures. The observed images have indicated that dusts with both flake and cauliflower structures were present on the surfaces of sample collectors. Carbon dusts with the flake structures exhibited smoother surfaces than dusts with cauliflower structures. Dust samples were also collected from arc spot parts of the carbon electrode surfaces by placing carbon compound adhesive tapes. Micro-meter size dusts were found collected on the surface of the tapes, indicating formation of dusts during arc discharges.

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© 2013 by The Japan Society of Plasma Science and Nuclear Fusion Research
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