Monte Carlo modeling of coherent scattering: Influence of interference

Journal Article · Sun Dec 01 04:00:00 EST 1996 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.552743· OSTI ID:458239

Leliveld, C J ^[1]; Maas, J G ^[2]; Bom, V R; Eijk, C W.E. van ^[3]

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1. Philips Medical Systems, Best (Netherlands)
2. Shell International Exploration and Production, Rijswijk (Netherlands)
3. Delft Univ. of Technology (Netherlands). Radiation Technology Group

In this study, the authors present Monte Carlo (MC) simulation results for the intensity and angular distribution of scattered radiation from cylindrical absorbers. For coherent scattering the authors have taken into account the effects of interference by using new molecular form factor data for the AAPM plastic materials and water. The form factor data were compiled from X-ray diffraction measurements. The new data have been implemented in the authors` Electron Gamma Shower (EGS4) Monte Carlo system. The hybrid MC simulation results show a significant influence on the intensity and the angular distribution of coherently scattered photons. They conclude that MC calculations are significantly in error when interference effects are ignored in the model for coherent scattering. Especially for simulation studies of scattered radiation in collimated geometries, where small angle scattering will prevail, the coherent scatter contribution is highly overestimated when conventional form factor data are used.

• OSTI ID: 458239
• Report Number(s): CONF-951073--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 6Pt2 Vol. 43; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

55 BIOLOGY AND MEDICINE
BASIC STUDIES
COMPUTERIZED TOMOGRAPHY
DATA COVARIANCES
IMAGE PROCESSING
IMAGE SCANNERS
MATHEMATICAL MODELS
MONTE CARLO METHOD
PHOTON TRANSPORT
SCATTERING