MEASUREMENTS OF SOLAR HEAVY-IONS INSIDE THE EARTHS MAGNETOSPHERE

Stacks of cellulose nitrate and cellulose triacetate plastic nuclear track detectors were exposed on a russian satellite in a low earth orbit during the solar particle events in October 1989. Extremely high fluences of solar particles with nuclear charges equal to or greater than 6 were registered, In CTA a charge identification for Z= 8-14 with a resolution of 0.5 charge units was achieved. Energy spectra and arrival directions of the detected particles were measured in both detector materials, The distribution of the arrival directions for ions in CTA shows a significant contribution of particles impinging from below the horizon.