Abstract
For the daytime E-layer ionospheric scatter propagation, the controlling solar influences cannot be neglected. To account for the experimental results obtained by D. K. Bailey et al., showing solar influences, a new theory is proposed which introduces the effects of ion production and recombination to villars-Weisskopf's pressure theory. The electrons are assumed to be compressed or dilated at the same rate as the air itself, the latter being subject to adiabatic change of pressure, while the electrons and ions moving with the air molecules are produced by solar radiation and then recombined. The results obtained are quite satisfactory to account for the dependence of received scattered signal intensity on both frequency and scattering angle, at least concerning the daytime solar controlled scatter propagation in the E-region.
