Ponderomotive acceleration of electrons by a whistler pulse |
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| Authors: | R. Singh A. K. Sharma |
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| Affiliation: | (1) Goddard Space Flight Center (GSFC) Heliophysics Science Div. (HSD), NASA, 20771 Greenbelt, Maryland, 673, USA; |
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| Abstract: | A Gaussian whistler pulse is shown to cause ponderomotive acceleration of electrons in a plasma when the peak whistler amplitude exceeds a threshold value and the whistler frequency is greater than half the cyclotron frequency, ω>ω c /2. The threshold amplitude decreases with the ratio of plasma frequency to electron cyclotron frequency, ω p /ω c . However, above the threshold amplitude, the acceleration energy decreases with ω p /ω c . The electrons gain velocities about twice the group velocity of the whistler. |
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