Simulation of in-ice cosmic ray air shower induced particle cascades

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Hauptverfasser: De Kockere, Simon, de Vries, Krijn D., van Eijndhoven, Nick, Latif, Uzair A.
Format: Preprint
Veröffentlicht: 2022
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author De Kockere, Simon
de Vries, Krijn D.
van Eijndhoven, Nick
Latif, Uzair A.
author_facet De Kockere, Simon
de Vries, Krijn D.
van Eijndhoven, Nick
Latif, Uzair A.
contents We present detailed microscopic simulations of high-energy cosmic-ray air showers penetrating high-altitude ice layers that can be found at the polar regions. We use a combination of the CORSIKA Monte Carlo code and the Geant4 simulation toolkit, and focus on the particle cascade that develops in the ice to describe its most prominent features. We discuss the impact of the ice layer on the total number of particles in function of depth of the air shower, and we give a general parameterization of the charge distribution in the cascade front in function of Xmax of the cosmic ray air shower, which can be used for analytical and semi-analytical calculations of the expected Askaryan radio emission of the in-ice particle cascade. We show that the core of the cosmic ray air shower dominates during the propagation in ice, therefore creating an in-ice particle cascade strongly resembling a neutrino-induced particle cascade. Finally, we present the results of microscopic simulations of the Askaryan radio emission of the in-ice particle cascade, showing that the emission is dominated by the shower core, and discuss the feasibility of detecting the plasma created by the particle cascade in the ice using RADAR echo techniques.
format Preprint
id arxiv_https___arxiv_org_abs_2202_09211
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle Simulation of in-ice cosmic ray air shower induced particle cascades
De Kockere, Simon
de Vries, Krijn D.
van Eijndhoven, Nick
Latif, Uzair A.
High Energy Astrophysical Phenomena
We present detailed microscopic simulations of high-energy cosmic-ray air showers penetrating high-altitude ice layers that can be found at the polar regions. We use a combination of the CORSIKA Monte Carlo code and the Geant4 simulation toolkit, and focus on the particle cascade that develops in the ice to describe its most prominent features. We discuss the impact of the ice layer on the total number of particles in function of depth of the air shower, and we give a general parameterization of the charge distribution in the cascade front in function of Xmax of the cosmic ray air shower, which can be used for analytical and semi-analytical calculations of the expected Askaryan radio emission of the in-ice particle cascade. We show that the core of the cosmic ray air shower dominates during the propagation in ice, therefore creating an in-ice particle cascade strongly resembling a neutrino-induced particle cascade. Finally, we present the results of microscopic simulations of the Askaryan radio emission of the in-ice particle cascade, showing that the emission is dominated by the shower core, and discuss the feasibility of detecting the plasma created by the particle cascade in the ice using RADAR echo techniques.
title Simulation of in-ice cosmic ray air shower induced particle cascades
topic High Energy Astrophysical Phenomena
url https://arxiv.org/abs/2202.09211