Normalized ionization yield function for various nuclei obtained with full Monte Carlo simulations |
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| Authors: | AL Mishev PIY Velinov |
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| Institution: | 1. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee, 1784 Sofia, Bulgaria;2. Space and Solar Terrestrial Research Institute, Bulgarian Academy of Sciences, Bl.3 Acad. Georgi Bonchev str., 1113 Sofia, Bulgaria;3. Sodankyla Geophysical Observatory (Oulu unit), University of Oulu, Finland |
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| Abstract: | Several recent results important for production of ion pairs in the Earth atmosphere by various primary cosmic ray nuclei are presented. The direct ionization by various primary cosmic ray nuclei is explicitly obtained. The longitudinal profile of atmospheric cascades is sensitive to the energy and mass (charge) of the primary particle. In this study different cosmic ray nuclei are considered as primaries, namely Helium, Oxygen and Iron nuclei. The cosmic ray induced ionization is obtained on the basis of CORSIKA 6.52 code simulations using FLUKA 2006 and QGSJET II hadronic interaction models. The energy of the primary particles is normalized to GeV per nucleon. In addition, the ionization yield function Y is normalized as ion pair production per nucleon. The obtained ionization yield functions Y for various primaries are compared. The presented results and their application are discussed. |
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| Keywords: | Cosmic rays Atmospheric cascade simulations Atmospheric ionization |
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