ON THE CORRELATION BETWEEN SPECTRA OF SOLAR MICROWAVE BURSTS . AND SPECTRA OF PROTON FLUXES NEAR EARTH . ... which is equivalent to the power-law index of the integral energy spectrum of protons registered near the Earth orbit in a range of 10-100 MeV , on the one hand, and parameters of microwave bursts such as a ratio of peak fluxes at two frequencies (e.g., 9 and 15 GHz) and a microwave peak frequency f m as well. ...