Atmospheric and Galactic Production and Propagation of Light Antimatter Nuclei

The production and propagation of light antimatter nuclei p, d, t, 3 H e, 4 H e has been calculated using inclusive ppro duction cross sections from a new data analysis, and coalescence models for the production of composite particles. Particles were propagated using recently proven phenomenological approaches. The atmospheric secondary flux is evaluated for the first time. The Galactic flux obtained are larger than those obtained previously in similar calculations. The non-annihilating scattering contributions of the propagated particles are intro duced. The preliminary results are shown and discussed.