Calculation the mass attenuation coefficient of beta-particles through Polyvinyl chloride | ||
| Iraqi Journal of Physics | ||
| Article 1, Volume 8, Issue 12, August 2010, Pages 50-53 | ||
| Authors | ||
| Harith I. Jaafer; Ban M. Alshabander | ||
| Abstract | ||
| The mass attenuation coefficient for beta particles through pure Polyvinyl chloride (PVC) and flax fibers- reinforced PVC composite were investigated as a function of the absorber thickness and the absorber to source distance. The beta particles mass attenuation coefficients were obtained using a NaI(Tl) energy selective scintillation counter with 90Sr/ 90Y beta source having an energy range from (0.546-2.275) MeV. Pure PVC polymer samples were prepared by compacting the PVC powder in a mould at high pressure (10bar) and temperature about 140°C for 30 minutes. A hot press system was used for this process. The experimentally obtained values of mass attenuation coefficients for 90Sr and 90Y were found to be 7.72 cm2.g-1and 0.842 cm2.g-1 respectively, and the measured mass attenuation coefficients values decrease with increase of the absorber to source distance . | ||
| Keywords | ||
| mass attenuation coefficient; polyvinyl chloride | ||
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