Nonlinear Collisionless Plasma Waves and Intensity of the Electric Field of the Ionospheric Irregularities


  • B. Prasad,

  • Hari K. Sen,

  • P. Bakshi,

  • G. Kalman


An exact longitudinal wave solution of nonlinear equations for a cold and collisionless one-fluid magneto plasma has been obtained. The wave is found to be anharmonic (non-sinusoidal) in form and its amplitude involves an arbitrary parameter. By means of a pseudo-potential well, the domain of nonlinear oscillations is defined and the maximum amplitude up to which a nonlinear wave can grow is determined. Intensity of the equatorial sporadic-E irregularities is computed and the coherent energy density is found to be of the order of 10−9 erg/cm3.