Klein-Nishina electronic cross-section, Compton cross sections, and buildup factor of wax for radiation shielding and protection.

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ID: 51314
2018
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Abstract
Klein-Nishina scattering cross-sections, Compton scattering, mass attenuation and energy transfer cross-sections, linear attenuation coefficient and buildup factor of 99.99% pure paraffin wax (Carbon = 85.14%, Hydrogen = 14.86%). are calculated using 0.662, 0.835, 1.17 and 1.33 MeV γ-rays. The mentioned γ-rays were obtained from Cs-137, Mn-54 and Co-60 radioisotopes. Gamma rays obtained from these radioisotopes were passed through circular shaped wax slices and allowed to fall on a NaI detector. The thickness of wax slices were 0.33-2.9 cm with 6 cm diameter. Lead collimator of 1 cm diameter hole in the middle was used to obtain a collimated beam for narrow beam geometry. Broad beam geometry was used by removing the collimator to investigate buildup factor. Results show that Klein-Nishina electronic cross-section, Compton mass attenuation coefficient and Compton energy transfer coefficient all decrease with increasing photon energy. Linear attenuation coefficients μ = 0.0532 cm for 1.17 MeV beam and μ = 0.0419 cm for 1.33 MeV γ-rays were obtained for wax. Variations in buildup factors are observed with increasing thickness of wax for 1.17 and 1.33 MeV beams.
Reference Key
alenezi2018kleinnishinajournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Alenezi, Manar;Stinson, Kayla;Maqbool, Muhammad;Bolus, Norman;
Journal journal of radiological protection : official journal of the society for radiological protection
Year 2018
DOI
10.1088/1361-6498/aaa57b
URL
Keywords
Monte Carlo back scatter dose perturbation factor flattening filter (ff) forward dose perturbation factor mass attenuation coefficient photon spectrum unflattened (uf) x ray beam transmission factor

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