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Impedance of an ion‐sheathed spherical probe in a warm, isotropic plasma
Author(s) -
Aso Takehiko
Publication year - 1973
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs008i002p00139
Subject(s) - isotropy , plasma , physics , electrical impedance , debye sheath , ion , plasma oscillation , radio frequency , computational physics , resonance (particle physics) , mechanics , atomic physics , optics , telecommunications , quantum mechanics , computer science
A self‐consistent analysis of a radio‐frequency impedance of a negatively biased spherical probe in a warm, isotropic plasma is given. Linearized zero‐ and first‐order hydrodynamic and Maxwell equations are numerically solved for a specified probe‐retarding potential, and the influence of a realistic sheath structure upon the resonance behavior is discussed. It is concluded that the usual abrupt‐sheath model can safely be a good approximation for the study of radio frequency properties of a probe immersed in a plasma.