Influence of the ambipolar-to-free diffusion transition on dust particle charge in a complex plasma afterglow | Zendy

Lénaïc Couëdel | Zendy; A. A. Samarian | Zendy; Maxime Mikikian | Zendy; L. Boufendi | Zendy

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Influence of the ambipolar-to-free diffusion transition on dust particle charge in a complex plasma afterglow

Author(s) -

Lénaïc Couëdel,

A. A. Samarian,

Maxime Mikikian,

L. Boufendi

Publication year - 2008

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.2938387

Subject(s) - ambipolar diffusion , afterglow , physics , plasma , diffusion , atomic physics , dusty plasma , particle (ecology) , residual , charged particle , charge (physics) , molecular physics , ion , astrophysics , nuclear physics , gamma ray burst , thermodynamics , quantum mechanics , oceanography , algorithm , computer science , geology

International audienceThe influence of diffusive losses on residual dust charge in a complex plasma afterglow has been investigated. The residual charge distribution was measured and exhibits a mean value Qdres~(−3e − 5e) with a tail in the positive region. The experimental results have been compared with simulated charge distributions. The dust residual charges were simulated based on a model developed to describe complex plasma decay. The experimental and simulated data show that the transition from ambipolar to free diffusion in the decaying plasma plays a significant role in determining the residual dust particle charges. The presence of positively charged dust particles is explained by a broadening of the charge distribution function in the afterglow plasma

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