Numbers of Electrons in Solar Flares as Deduced from Microwave and X-Ray Bursts

We discuss Whether the numbers of x-ray and radio-produced electrons in solar flares are the same.The number of the radio-produced electrons that is estimated with an inhomogeneous source increases by a factor of 10^(3)-10^(4) because of the inhomogeneity and the decreased magnetic field(B=120 G)of the radio source.The number of the x-ray-produced electrons decreases by a factor of 10-30 due to the increase of the number density of ions(3 × 10^(10)cm^(-3)).These are the reasons why the number of radio-produced electrons is approximately equal to that of x-ray produced in the 1981 April 27 burst.