Dependence of plasma line enhancement on HF pulse length and ionosphere preconditioning


  • G. J. Morales,

  • A. Y. Wong,

  • J. Santoru,

  • L. Wang,

  • L. M. Duncan


Recent ionospheric heating experiments at Arecibo demonstrate that the rapid growth of electrostatic plasma waves exhibits a remarkable dependence on HF pulse length and CW preconditioning. The effects are traceable to the generation of short-scale distortions in the density profile near the plasma resonance.