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Effect of a Transverse D.C. Electric Fields on Electrostatic lon-Cyclotron Wave Instability

The temporal evolution of the current-driven electrostatic ion-cyclotron (CDEIC) instability is investigated in presence of a transverse d.c. electric fields in a collisional magnetized plasma. The growth rate of the instability has the largest value at the mode frequency for the appropriate magnetic field (where the effect of a transverse d.c. electric fields is larger) when the electron drift velocity is less than the critical value for the CDEIC instability. The growth rate is also a sensitive function of electron collision frequency.