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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:44 |
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Conference: Bucharest University Faculty of Physics 2004 Meeting
Section: Atomic and Molecular Physics; Astrophysics
Title:
Experimentally guided Monte Carlo calculations of the atmospheric
muon flux for interdisciplinary applications
Authors:
B.Mitrica^1,I.M.Brancus^1, G.Toma^1, J.Wentz^1,2, H.Rebel^2,3, A.Bercuci^1,
C.Aiftimiei^1
Affiliation:
1.IFIN-HH, RO-76900 Bucharest, POB MG-6, Romania
2.Forschungszentrum Karlsruhe, POB 3640, 76021 Karlsruhe, Germany
3.University of Heidelberg, 69120 Heidelberg, Germany
E-mail
Keywords:
Cosmic ray muons, computational models
Abstract:
Atmospheric muons are produced in the interactions of primary cosmic rays particle with Earth`s atmosphere, mainly by the decay of pions and kaons generated in hadronic interactions. They decay further in electrons and positrons and electron and muon neutrinos. Being the penetrating cosmic rays component, the muons manage to pass entirely through the atmosphere and can pass even larger absorbers before they interact with the material at the Earth`s surface, and due to cosmogenic production of isotopes by atmospheric muons, information of astrophysical, environmental and material research interest can be obtained. Up to now, mainly semi-analytical approximations have been used to calculate the muon flux for estimating the cosmogenic isotope production, necessary for different applications. Our estimation of the atmospheric muon flux is based on a Monte-Carlo simulation program CORSIKA, in which we simulate the development in the atmosphere of the extensive air showers, using different models for the description of the hadronic
interaction. Atmospheric muons are produced in the interactions of primary cosmic rays particle with Earth`s atmosphere, mainly by the decay of pions and
kaons generated in hadronic interactions. They decay further in electrons and positrons and electron and muon neutrinos. Being the penetrating cosmic rays component, the muons manage to pass entirely through the atmosphere and can pass even larger absorbers before they interact with the material at the Earth`s surface, and due to cosmogenic production of isotopes by atmospheric muons, information
of astrophysical, environmental and material research interest can be obtained. Up to now, mainly semi-analytical approximations have been used to calculate the muon flux for estimating the cosmogenic isotope production, necessary for different applications. Our estimation of the atmospheric muon flux is based on a Monte-Carlo simulation program CORSIKA, in which we simulates the development in the atmosphere of the extensive air showers, using different models for the description of the hadronic
interaction and taking into account the influence of the Earth`s magnetic field. Such simulations are controlled by the experimental results of the muon charge ratio, representing the ratio of positive to negative muon flux, obtained with WILLI rotatable detector in IFIN-HH Bucharest.
The two advantages in a good estimation of muon flux by our method are due to the fact that CORSIKA code allows a correct description of all secondary interactions in the Earth`s atmosphere and of all trajectories of the particles in the geomagnetic field; besides this, such simulations
can be checked with experimental data of muon charge ratio measured with WILLI detector.
Such simulations are controlled by the experimental results of the muon charge ratio, representing the ratio of positive to negative muon flux, obtained with WILLI rotatable detector in IFIN-HH Bucharest.
The two advantages in a good estimation of muon flux by our method are due to the fact that CORSIKA code allows a correct description of all secondary interactions in the Earth`s atmosphere and of all trajectories of the particles in the geomagnetic field; besides this, such simulations
can be checked with experimental data of muon charge ratio measured with WILLI detector.
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