Validation of the Geant4 electromagnetic photon cross-sections for elements and compounds

The Geant4 toolkit provides a wide set of alternative models to describe the electromagnetic interaction of photons with matter. The photon cross-sections that are used by the Geant4 electromagnetic models have been compared to external reference libraries (NIST, EPDL97, SANDIA) for several elements...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2010-06, Vol.618 (1), p.315-322
Main Authors: Cirrone, G.A.P., Cuttone, G., Di Rosa, F., Pandola, L., Romano, F., Zhang, Q.
Format: Article
Language:English
Subjects:
Accelerators
Cross sections
Cross sections (physics)
Geant4
Mathematical models
Monte Carlo
Photon cross-sections
Photons
Rayleigh scattering
Validation
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Summary:The Geant4 toolkit provides a wide set of alternative models to describe the electromagnetic interaction of photons with matter. The photon cross-sections that are used by the Geant4 electromagnetic models have been compared to external reference libraries (NIST, EPDL97, SANDIA) for several elements and compounds. The agreement of the Geant4 cross-section with the reference data has been quantified by means of statistical analysis. In particular, the cross-sections of all the Geant4 photon models are in statistical agreement with the NIST database, with the exception of Rayleigh scattering. A critical discussion is presented for those cases where a disagreement is found.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2010.02.112