Influences of Ions in the Ionosphere

Abstract

It is examined that how the propagation of radio wave in the ionized region is influenced by the positive and negative ions in its region, and how a record is altered for the wave reflected from the ionized region for these ions. Especially, these probrems are discussed for the wave in and from the lower ionized region where the ionic density is considered to be great. The equation of motion and the Maxwell's equation are solved in the presence of the earth's magnetic field, ionic and electronic collisional frequencies, including the Lorentz polarization term. Results show that (1) influences by the two kinds of ions on the propagation become greater as the frequency of the wave decreases; (2) energy of the reflection increases; (3) the deviation of energy and the virtual height of reflection for wave of certain frequency become smaller than those in the regions consisted of only electron; (4) the height of reflection thus approaches to the true height (no retardation), but the magnitude of the electron density, which is given by the relation N=Af2, appears to be doubtful in the case of the measurement by low frequency radio wave.