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Jpn. J. Appl. Phys. 33 (1994) pp. L804-L806  |Next Article|  |Table of Contents|
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Observation of Coulomb-Crystal Formation from Carbon Particles Grown in a Methane Plasma

Yasuaki Hayashi and Kunihide Tachibana

Department of Electronics and Information Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606

(Received April 4, 1994; accepted for publication April 28, 1994)

A Coulomb crystal was successfully formed as a result of the growth of spherical and monodisperse carbon particles suspended in a methane plasma. The crystal structure was confirmed to be hexagonal from top- and side-view photographs. The particle growth was monitored by Mie-scattering ellipsometry and correlated with the formation process of the Coulomb crystal. The liquid-to-solid phase transition occurred when particle diameter grew to 1.3 µm, and when the Wigner-Seitz radius was about 90 µm.

KEYWORDS: Coulomb crystal, phase transition, dusty plasma, carbon particles, Mie scattering, in-process ellipsometry
URL: http://jjap.ipap.jp/link?JJAP/33/L804/
DOI: 10.1143/JJAP.33.L804

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