The energy spectra of heavy nuclei measured by the ATIC experiment |
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| Affiliation: | 1. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Leninskie Gory, Moscow 119992, Russia;2. NASA Marshall Space Flight Center, Huntsville, AL 35812, USA;3. Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USA;4. Max Plank Institute fur Aeronomie, Katlinberg – Lindau 37191, Germany;5. Department of Physics, Southern University, Baton Rouge, LA 70813, USA;6. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA;7. Purple Mountain Observatory, Chinese Academy of Science, Nanjing 210008, China |
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| Abstract: | ![]()
The preliminary energy spectra of heavy nuclei C, O, Ne, Mg, Si, and Fe in the primary cosmic rays measured by the ATIC-2 experiment are presented and compared to previous data and to propagation models. Using previous data to extend the ATIC-2 results for all heavy nuclei to higher energy, the combined spectra can be best fit with diffusion model with weak reacceleration and scattering on random magnetic field with a Kolmogorov spectrum fluctuations becoming dominant at high energy. |
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