Abstract
By using the Sagdeev pseudo-potential approach, the solitary kinetic Alfven waves have been theoretically investigated in a collisionless magnetized plasma in presence of negative ions. Sagdeev potential is plotted for different plasma parameters and it is shown that both hump and dip solitons may exist for kinetic Alfven waves which support the data received from space satellites. The negative ions are shown to have significant effects on the conditions for existence and properties of these solitons.
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