Modelling low energy electron and positron tracks for biomedical applications.
Int J Radiat Biol
; 88(1-2): 71-6, 2012 Jan.
Article
em En
| MEDLINE
| ID: mdl-21923304
ABSTRACT
PURPOSE:
To incorporate the effects of low energy electrons and positrons into radiation interaction models. MATERIALS ANDMETHODS:
The simulation method proposed here was based on experimental and theoretical cross section data and energy loss spectra we have previously derived. After a summary of the main techniques used to obtain reliable input data, the basis of a Low Energy Particle Track Simulation (LEPTS) procedure was established. The programme is specifically designed to describe electron and positron interactions below 10 keV, down to thermal energies.RESULTS:
Single electron and positron tracks in water are presented and the possibility of using these results to develop tools for nanodosimetry is discussed.CONCLUSIONS:
Standard approximations based on high incident energies, such as the Born-Bethe theory, are not suitable to simulate electron and positron tracks below 10 keV. Prior to the inclusion of low-energy effects in a radiation model, an appropriate study is required to determine both the interaction cross sections and the energy loss spectra.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Método de Monte Carlo
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Pesquisa Biomédica
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Elétrons
Tipo de estudo:
Health_economic_evaluation
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article