| Type de publication : |
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Preprint, Working Paper, Document sans référence, etc. |
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| Domaine : |
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Physique/Physique/Physique des plasmas
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| Titre : |
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Melting of 2D Coulomb clusters in dusty plasmas |
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| Auteur(s) : |
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Ryuta Ichiki ( ) 1, Yuriy Ivanov 2, Matthias Wolter 2, Yoshinobu Kawai 1, André Melzer 2 |
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| Laboratoire : |
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| Résumé : |
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The melting of 2D dust clusters caused by one additional particle in the lower layer has experimentally been observed to undergo a two-step transition, which divides the phase of the cluster into three stages. The first transition is a jump of the dust kinetic energy due to the onset of an instability of the lower-layer particle, shifting the cluster from an ordinary to a hot crystalline state. The second transition is the actual phase transition into a liquid state, which occurs at a decisively lower gas pressure. The detailed dynamical properties of the system during the transition were determined in terms of the normal mode analysis. |
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Langue du texte
intégral : |
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Anglais |
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| Mots Clés : |
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complex plasma – plasma crystal – melting |
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| Classification : |
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PACS: 52.27.Lw; 52.35.-g |
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| Commentaire : |
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12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France) |
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