Future directions on low-energy radiation dosimetry

Abstract For more than one century, low-energy (< 100 keV) photons (x-rays and gamma) have been widely used in different areas including biomedical research and medical applications such as mammography, fluoroscopy, general radiography, computed tomography, and brachytherapy treatment, amongst ot...

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Autor principal:	G. Massillon-JL
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0d94a6aa9e14439e8bcf5c5e40fc0d94
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spelling	oai:doaj.org-article:0d94a6aa9e14439e8bcf5c5e40fc0d942021-12-02T15:45:26ZFuture directions on low-energy radiation dosimetry10.1038/s41598-021-90152-32045-2322https://doaj.org/article/0d94a6aa9e14439e8bcf5c5e40fc0d942021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90152-3https://doaj.org/toc/2045-2322Abstract For more than one century, low-energy (< 100 keV) photons (x-rays and gamma) have been widely used in different areas including biomedical research and medical applications such as mammography, fluoroscopy, general radiography, computed tomography, and brachytherapy treatment, amongst others. It has been demonstrated that most of the electrons produced by low photon energy beams have energies below 10 keV. However, the physical processes by which these low energy electrons interact with matter are not yet well understood. Besides, it is generally assumed that all the energy deposited within a dosimeter sensitive volume is transformed into a response. But such an assumption could be incorrect since part of the energy deposited might be used to create defects or damages at the molecular and atomic level. Consequently, the relationship between absorbed dose and dosimeter response can be mistaken. During the last few years, efforts have been made to identify models that allow to understand these interaction processes from a quantum mechanical point of view. Some approaches are based on electron-beam − solid-state-interaction models to calculate electron scattering cross-sections while others consider the density functional theory method to localize low energy electrons and evaluate the energy loss due to the creations of defects and damages in matter. The results obtained so far could be considered as a starting point. This paper presents some methodologies based on fundamental quantum mechanics which can be considered useful for dealing with low-energy interactions.G. Massillon-JLNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q G. Massillon-JL Future directions on low-energy radiation dosimetry
description	Abstract For more than one century, low-energy (< 100 keV) photons (x-rays and gamma) have been widely used in different areas including biomedical research and medical applications such as mammography, fluoroscopy, general radiography, computed tomography, and brachytherapy treatment, amongst others. It has been demonstrated that most of the electrons produced by low photon energy beams have energies below 10 keV. However, the physical processes by which these low energy electrons interact with matter are not yet well understood. Besides, it is generally assumed that all the energy deposited within a dosimeter sensitive volume is transformed into a response. But such an assumption could be incorrect since part of the energy deposited might be used to create defects or damages at the molecular and atomic level. Consequently, the relationship between absorbed dose and dosimeter response can be mistaken. During the last few years, efforts have been made to identify models that allow to understand these interaction processes from a quantum mechanical point of view. Some approaches are based on electron-beam − solid-state-interaction models to calculate electron scattering cross-sections while others consider the density functional theory method to localize low energy electrons and evaluate the energy loss due to the creations of defects and damages in matter. The results obtained so far could be considered as a starting point. This paper presents some methodologies based on fundamental quantum mechanics which can be considered useful for dealing with low-energy interactions.
format	article
author	G. Massillon-JL
author_facet	G. Massillon-JL
author_sort	G. Massillon-JL
title	Future directions on low-energy radiation dosimetry
title_short	Future directions on low-energy radiation dosimetry
title_full	Future directions on low-energy radiation dosimetry
title_fullStr	Future directions on low-energy radiation dosimetry
title_full_unstemmed	Future directions on low-energy radiation dosimetry
title_sort	future directions on low-energy radiation dosimetry
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0d94a6aa9e14439e8bcf5c5e40fc0d94
work_keys_str_mv	AT gmassillonjl futuredirectionsonlowenergyradiationdosimetry
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Future directions on low-energy radiation dosimetry

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