We report measurements of the charge composition of solar cosmic rays during two flares occurring in 1971 April and September. The results were derived from a solid-state dE/dx versus E telescope which was part of the Goddard cosmic-ray experiment on the IMP-VI spacecraft. Our data suggest that the helium-to-medium ratio may be varying from one flare to the next. We compare our abundance ratios (normalized to oxygen) with measurements of other investigators and find a number of significant disagreements. In particular, our data do not exhibit any systematic enhancement of heavy nuclei with respect to the spectroscopic abundances such as reported by Mogro-Campero and Simpson. Finally, we compare our results with the spectroscopically determined coronal and photospheric values, and again we find several important differences between the two sets of data. Subject headings: , cosmic rays - abundances, solar -- flares, solar
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Teegarden et al. (1973) studied this question.