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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:50 |
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Conference: Bucharest University Faculty of Physics 2021 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Optical simulation of radiation in air with FLUKA code
Authors:
Ioana LALĂU (1,2), Mihail-Răzvan IOAN (2), Ionel LAZANU (1)
*
Affiliation:
1) University of Bucharest, Faculty of Physics, POBox MG-11, Magurele - Bucharest, Romania
2) Horia Hulubei National Institute of Physics and Nuclear Engineering, POBox MG-6, Magurele, Romania
E-mail
ioana.lalau@nipne.ro
Keywords:
radioluminescence, FLUKA, simulations
Abstract:
Alpha particle detection it’s a very important issue that specialized personnel has to face because the inhalation or ingestion of such radiation can cause severe damage to living tissue. Due to the short-range (few centimeters in air) and high stopping power, traditional detectors which require direct interaction with alpha particles must be used in very close proximity to a source. This method is time-consuming, tedious and exposes the personnel to other hazards and risks. So, we need a new method for remote detection of alpha radiation and this can be done using the radioluminescence process. Excited nitrogen molecules by alpha particles emit photons which can be used to reveal the presence of alpha sources. In detecting alpha sources it’s important to evaluate all the background sources that can emit photons in the same wavelength interval as alpha particles. The aim of this work is to analyze the possibility to distinguish between the signal obtained from alpha particles and background sources. EXPACS [1] code was used to estimate cosmic ray fluxes – which are a major component of the background, especially electrons and positrons which can excite nitrogen molecules followed by photon emission and also can produce Cerenkov in the same wavelength as photons produced by alpha. Monte Carlo code, FLUKA [2], was used to estimate photon fluence produced by radiations in air.
References:
[1] Tatsuhiko Sato, (2015) Analytical Model for Estimating Terrestrial Cosmic Ray Fluxes Nearly Anytime and Anywhere in the World: Extension of PARMA/EXPACS. PLoS ONE 10(12): e0144679., doi:10.1371/journal.pone.0144679
[2] A. Ferrari, P.R. Salla, A. Fasso and J. Ranft,“FLUKA: a multi-particle transport code” CERN-2005-10 (2005), INFN/TC_05/11, SLAC-R-773
Acknowledgement:
This project 19ENV02 RemoteALPHA has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme. 19ENV02 RemoteALPHA denotes the EMPIR project reference.
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