The effect of model assumptions on computations of cosmic ray induced ionization in the atmosphere |
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| Authors: | AL Mishev P Velinov |
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| Institution: | 1. Nuclear Regulatory Agency, 69 Shipchenski Prokhod, 1574 Sofia, Bulgaria;2. Institute for Solar Terrestrial Influences—Bulgarian Academy of Sciences, Bl.3 “Acad.Georgi Bonchev” str. 1113 Sofia, Bulgaria;1. High Temperature Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;2. Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259-R2-27, Midori-Ku, Yokohama 226-8503, Japan;1. Department of Physics, COMSATS Institute of Information Technology, Defence Road Off Raiwind Road, Lahore 54000, Pakistan;2. Institut für Neurowissenschaften und Medizin, INM-5: Nuklearchemie, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;1. Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, Huntsville, AL35899, United States;2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA91109, United States;3. Department of Space Science, UAH, Huntsville, AL35899, United States;1. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee, 1784 Sofia, Bulgaria;2. Institute for Space Research and Technology, Bulgarian Academy of Sciences, Bl. 1 Acad. G. Bonchev str., 1113 Sofia, Bulgaria;3. Sodankylä Geophysical Observatory (Oulu unit), University of Oulu, Finland;1. ReSolve Center of Excellence, University of Oulu, Finland;2. Institute for Space Research and Technology, Bulgarian Academy of Sciences, Bl. 1 Acad. G. Bonchev str. 1113 Sofia, Bulgaria;3. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee, 1784 Sofia, Bulgaria |
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| Abstract: | The longitudinal profile of atmospheric cascades is sensitive to the energy, mass of the primary particle and to atmospheric state. In this work are compared ionization yield functions Y for winter, summer and US standard profiles of Earth's atmosphere. The various profiles are obtained on the basis of CORSIKA 6.52 code simulations using FLUKA 2006 and QGSJET II hadronic interaction subroutines. The energy deposit of proton induced cascade processes in the atmosphere is calculated for different types of atmospheres. The ion pair production in the atmosphere and the contribution of the different shower components, precisely the electromagnetic, muon and hadronic is estimated according applied atmospheric types. In addition simulations with different hadronic interaction models GHEISHA 2002, FLUKA 2006 and QGSJET II are carried out. The ion pair production in the atmosphere and the contribution of different shower components is estimated according the assumed hadronic interaction models. The yield function Y for total ionization, respectively, for the different components is compared. The observed differences are widely discussed. General conclusion concerning the application of various atmospheric profiles and hadron interaction models is carried out. |
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