Non-parabolic plasma sheath potential profile in a dusty plasma
Centro de Ciências Exatas e Tecnológicas
Universidade do Vale do Rio dos Sinos-UNISINOS
Av. Unisinos 950, 93022-000 São Leopoldo, RS, Brazil
Accepted: 23 November 2001
The recent proposal of a parabolic profile as a practical and useful approximation for all plasma sheath potentials is checked against the numerical results obtained from a self-consistent description of a dusty plasma near a conductive wall. The hypothesis of the parabolic nature of the electric potential is confirmed for low particle densities but is seemingly not obeyed for higher, yet reasonable, densities.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.40.Kh – Plasma sheaths
© EDP Sciences, 2002