Cosmic ray induced ionization in the atmosphere due to primary protons at solar minimum and maximum on the basis of CORSIKA code simulations

Cosmic ray induced ionization rate q produced by galactic cosmic rays (GCR) in the Earth's atmosphere is obtained on the basis of recent model using Monte Carlo simulations and parameterization of the primary spectrum. The simulations are carried out with CORSIKA 6.52 code using FLUKA 2006 and QGSJET II hadronic interaction subroutines. The energy deposit of GCR proton induced air showers is estimated. On the basis of previously defined and obtained cosmic ray induced ionization yield function Y and parameterization of the cosmic ray spectrum are calculated the ionization profiles for minimum and maximum of solar activity. (authors)