Calculation the mass attenuation coefficient of beta-particles through polyvinyl chloride

الملخص EN

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.