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Singh, R.

Paper Title Page
THPD036 Electron Acceleration by a Whistler Pulse 4358
 
  • R. Singh
    Indian Institute of Technology Delhi, Plasma Physics Group, New Delhi
  • A.K. Sharma
    Indian Institute of Technology Delhi, New Delhi
 
 

A Gaussian whistler pulse is shown to cause ponderomotive acceleration of electrons in a plasma when the peak whistler amplitude exceeds a threshold value. The threshold amplitude decreases with the ratio of plasma frequency to electron cyclotron frequency ωp / ωc. However above the threshold amplitude the acceleration energy decreases with ωp / ωc. The electrons gain velocities about twice the group velocity of the whistler. For acceleration of electrons one requires a whistler pulse of ω > ωc/2. It is seen that to enhance the energy gain the value of peak laser amplitude should be above a threshold value.