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Geant4 physics processes for microdosimetry simulation: Very low energy electromagnetic models for electrons in silicon
被引:45
|作者:
Valentin, A.
[1
]
Raine, M.
[1
]
Sauvestre, J. -E.
[1
]
Gaillardin, M.
[1
]
Paillet, P.
[1
]
机构:
[1] CEA, DAM, DIF, F-91297 Arpajon, France
来源:
关键词:
Geant4-DNA;
Energy-Loss Function;
Inelastic cross-sections;
Microdosimetry;
Electrons;
Silicon;
MuElec;
MONTE-CARLO-SIMULATION;
MEAN FREE PATHS;
LIQUID WATER;
CHARGED PARTICLES;
ELEMENTAL SOLIDS;
TRACK-STRUCTURE;
EXCITATION;
ION;
SPECTROSCOPY;
SPECTRA;
D O I:
10.1016/j.nimb.2012.07.028
中图分类号:
TH7 [仪器、仪表];
学科分类号:
0804 ;
080401 ;
081102 ;
摘要:
The Energy-Loss Function (ELF) of silicon is used to calculate differential and total inelastic cross-sections of incident electrons. The model is validated in the 50 eV-50 keV incident energy range by comparing the inelastic cross-sections, stopping powers, and ranges to experimental and calculated data from the literature. It is applicable down to 16.7 eV. The cross sections are then used to simulate low-energy electron tracks in silicon with Geant4, using a similar implementation as the Geant4-DNA extension; this new Geant4 extension is called MuElec. Generation of low-energy electrons is clearly seen. The obtained ranges are consistent with experimental data. (C) 2012 Elsevier By. All rights reserved.
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页码:66 / 73
页数:8
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