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Parametric Excitation of the Electron‐Acoustic Wave in a Multiply Ionized Plasma
Author(s) -
Guha S.,
Dwivedi C. B.
Publication year - 1986
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19860260307
Subject(s) - excitation , ion , plasma , atomic physics , electron , ionization , instability , physics , range (aeronautics) , parametric statistics , waves in plasmas , plasma parameters , materials science , mathematics , statistics , quantum mechanics , composite material , mechanics
Parametric excitation of the electron‐acoustic wave (EAW) has been analysed using a hydrodynamical model. The plasma has been assumed to consist of multiply charged ions. The ratio (α) of the hotter ion concentration to that of the electrons is a sensitive parameter. The condition for the occurrence of the EAW is well satisfied for the smaller values of α. The growth rate of the instability gets enhanced by increasing α and the charge state of the hotter ions. The values of α can be varied within short range only.