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

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 ...

Source: Journal of Radiological Protection - February 15, 2018 Category: Physics Authors: Manar Alenezi, Kayla Stinson, Muhammad Maqbool and Norman Bolus Source Type: research