| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:47 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
The average cosmic radiation dose at sea level
Authors:
I. Bacioiu (1), Tatiana Angelescu (2)
Affiliation:
Institute for Space Sciences, R 077125, Bucharest-Magurele, Romania (1)
Faculty of Physics, University of Bucharest, Bucharest-Magurele, Romania (2)
E-mail
baicioiu@spacescience.ro;tatiana_angelescu@yahoo.com
Keywords:
radioactivity levels, exposure, muon critical energy, radiation protection purposes.
Abstract:
The determination of the average effective dose rate by the most penetrating relativistic particles at the sea level (e.g., cosmic-ray muons) is the principal task in the evaluation of the risk from low-level exposure. The differential intensity and the effective dose rate for the cosmic ray muon at the sea level have been determined. The contribution of the pion and the charged kaons to the absolute cosmic ray muon spectrum at sea level were taken into account. The fluence to dose equivalent factors for relativistic muons has been used for converting particle fluence to the radiation dose at sea level. After applying the selection criteria, several calculations have been made for muons in the momentum range [0.2-1000] GeV/c. In the theoretical analysis of our data, the equivalent dose rate of muons at sea level is higher for smaller muon momentum range and is negligible for muon energies larger than 100 GeV. The present work indicates that effective dose rate by cosmic ray muons source in the atmosphere, at sea level, varies from approximately (0.102 0.003) mSv/yr to (0.186 0.010) mSv/yr during the solar minimum.
|
|
|
|