Angular width of a narrow beam for X-ray linear attenuation coefficient measurements
The detection of scattered radiation can be a major source of systematic errors when measuring the X-ray linear attenuation coefficient, μ . Angular distributions of scattered photons are studied for Z = 1 to 20 at energies 6 keV to 100 MeV, using tabulated atomic form factors and incoherent scatter...
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| Published in | Radiation physics and chemistry (Oxford, England : 1993) Vol. 75; no. 9; pp. 945 - 953 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.09.2006
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| Online Access | Get full text |
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| Summary: | The detection of scattered radiation can be a major source of systematic errors when measuring the X-ray linear attenuation coefficient,
μ
. Angular distributions of scattered photons are studied for
Z
=
1
to 20 at energies 6
keV to 100
MeV, using tabulated atomic form factors and incoherent scattering functions. A circularly symmetric pencil beam irradiation geometry is considered, and scatter acceptance angles, equal to the sum of the incident and exit beam divergence, are evaluated for systematic errors of 0.5–1.0% in measuring
μ
. The analysis is extended to water, comparing predictions based upon the independent atomic model to values obtained from tabulated molecular form factors. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 0969-806X 1879-0895 |
| DOI: | 10.1016/j.radphyschem.2006.01.008 |