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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:46 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Flux variation of cosmic muons
Authors:
Iuliana BACIOIU
Affiliation:
Institute of Space Science (ISS) - A subsidiary of INFLPR, P.O. Box MG-23, RO-077125 Bucharest-Magurele, Romania
E-mail
iuliana.bacioiu@spacescience.ro
Keywords:
cosmic radiation, energy spectrum, muon flux asymmetry.
Abstract:
The influences of the cosmic radiation effects on Terra, from space to the terrestrial atmosphere and underground have been discussed in the scientific community for many years, however many questions about the cosmic radiation remain open. Nowadays, it is known that Universe's atoms reach the atmosphere of the Earth up to the sea level altitudes and downward in the Earth's crust. Most primary cosmic ray particles as a function of their kinetic energy reach the lower atmosphere of the Earth. Because the exposures at the ionizing radiation can affect both the health of the living organisms and electronics devices, the ionizing radiation monitoring is a working tool for radiation protection, to identify the presence of radiation dose above the standard allowable limits, assuming the Earth's atmosphere as one ionizing calorimeter and the Sun as a supplementary source of radiation, in the Earth's atmosphere. At sea level, cosmic rays are mainly galactic cosmic radiation consisting mostly of muons and other relativistic elementary particles such as the electrons, the positrons, the neutrinos, the photons and the neutrons. Based on studies of the variation of the muon intensity as a function of muon energy, the different geomagnetic latitudes and the altitude above sea level, this study research the cosmic ray muon flux anisotropy existence in the terrestrial atmosphere, in a lower muon momentum region where the geomagnetic effects and the solar-cycle variations become important. The present results are in good agreement with the scientific data of other authors with interests in the field of cosmic ray physics.
Acknowledgement:
This research was supported by the Romanian Ministry of Research, Innovation and Digitalization under the Romanian National Core Program LAPLAS VII – Contract no. 30N/2023.
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