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Study of the intergrain interaction potential and associated instability of dust-lattice plasma oscillations in the presence of ion flow

par Kourakis, Ioannis ;Shukla, Padma Kant
Référence Physics letters. A, 317, 1-2, page (156-164)
Publication Publié, 2003-10

Article révisé par les pairs

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Résumé :

A comprehensive study of the Debye-Hückel repulsive and ion wakefield induced attractive potentials around a dust grain is presented, including ion flow. It is found that the modified interaction potential (especially the attractive wakefield force) can cause instability of linear dust oscillations propagating in a dusty plasma crystal composed of dust grains in a horizontal arrangement suspended in the sheath region near a conducting wall (electrode). The dependence of dust lattice modes on the ion flow is studied, revealing instability of dust lattice modes for certain values of the ion flow speed. © 2003 Elsevier B.V. All rights reserved.