Abstract
Plastic nuclear track detectors were used to study below-cutoff heavy ions in a 28.5 degree inclination orbit aboard the NASA satellite Long Duration Exposure Facility (LDEF). Particle arrival directions and energy spectra were measured in stacks of CR-39 and cellulose nitrate. The obtained results for particles with energies below 50 MeV/nuc are interpreted as evidence for the detection of a trapped component registered in the South Atlantic region at values of L = 1.4−1.7.
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