Pages: 288-293

Authors: Rameshwar R. Bhosale, Chaitali V. More,
Dhammajyot K. Gaikwad, Pravina P. Pawar, and Madhav N. Rode

Abstract

In the present work we investigated the gamma radiation parameters as mass attenuation coefficients µ/p, the total atomic scattering cross-sectionsσ_t, the electronic scattering cross-sectionsσ_e, the effective atomic numbers Z_eff, and the effective electron densities N_eff for some polymers such as polyoxymethylene (CH₂O), poly acrylonitrile (C₃H₃N), natural rubber (C₅H₈), poly ethyl acrylate (C₅H₈O₂), polyphenyl methacrylate (C₁₀H₁₀O₂), and polyethylene tetraphthalate (C₁₀H₈O₄). The gamma ray photons were detected by NaI(Tl) detector with resolution of 8.2 % at 662 keV, using radioactive gamma ray sources ⁵⁷Co, ¹³³Ba, ¹³⁷Cs, ⁵⁴Mn, ⁶⁰Co, and ²²Na  at energies 122, 356, 511, 662, 840, 1170, 1275, and 1330 keV. Values of µ/p for the chosen polymers decrease with increasing energy. The results of investigated data are useful in plastic industry, building materials, agriculture fields radiation shielding, accelerator centers, polymer industry, medical field, etc.

Key words: mass attenuation coefficient, total scattering cross-section, gamma-ray shielding, polymer

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