can anyone give me the flux of solar wind reaching earth...the number of electrons/protons /cm^2/sec reaching Earth from Sun...i searched many sites but couldn't get the value...
I think NASA/Goddard is the primary agency for collecting data on solar radiation. They do a lot of research into the effect of radiation on systems and personnel.
It looks like the local density is about 10 particles/cc. Electrons and protons (alphas) are electrically neutral on a macroscopic scale. The coulomb forces simply enforce electrical neutrality.