DETERMINATION OF SOLAR PROTON ENERGY SPECTRUMS BELOW 100 MEV FROM GROUND-BASED MEASUREMENTS

摘要

A technique is presented for calculating solar proton energy spectrums from electron density profiles measured during solar cosmic ray events. The electron density profile is converted to an electron-ion pair pro¬duction rate profile, and the spectrum determined by using the proton range-energy relations, This technique is applied to seven electron density profiles determined with multifrequency riometers in the July 1961 solar cosmic ray events, and the resulting spectrums are compared to satellite measurements. Coupling this method of calculation with the multifrequency riometer technique for determining electron density profiles gives a means of determining solar proton energy spectrums entirely from ground-based measurements.