Investigation of Gamma Ray Shielding by Polymer Composites

International Conference on Materials Engineering and Science

Husain, H.S.^1 ; Rasheed Naji, N.A.^2 ; Mahmood, B.M.^2

Department of Physics, College of Science, Baghdad University, Iraq^1

Medical Physics Unit Mustansiriya Medical College, Iraq^2

关键词: Exponential equations;    Graphic representation;    Linear attenuation coefficients;    Multi-channel analyzer;    Scintillator detector;    Shielding properties;    Spectrum absorptions;    Transmitted intensities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/454/1/012131/pdf
DOI  :  10.1088/1757-899X/454/1/012131

来源: IOP

【 摘 要 】

The present work deals with the shielding properties of polymer composites using gamma ray emitted from (Cs-137), point source. Polymer composites with different Lead ratio (0, 50, and 70 wt. %) with different lead size (powder and shot ball) have been prepared. To clarify the difference in the spectrum absorption gamma rays through the process of exponential equations graphic representation of the count rate as a function of composite thickness. The incident and transmitted intensities were measured using gamma spectrometer Sodium Iodide with traces of Thallium Na I (Tl) scintillator detector connected to a multichannel analyzer using the (USC-30) program. The liner attenuation coefficient were obtain of the prepared samples through graphic representation of natural allegartm count rate as a function of the thickness of absorbent material the obtained data are presented in the form of gamma spectra behind the prepared samples. Linear attenuation coefficients (μ) gamma ray were calculate .The results show that, the density of the composites was observed to increase with increase filler loading .The result shows a directly relationship, between the thickness of the absorbent material and liner attenuation confection. The linear attenuation coefficient of the composites was found to increase with increased filler content in the composites and the highest value was 0.277 cm-1 was found for 70 wt. % of lead powder. The results shows that, the composites prepared of good absorption for gamma low energy the displayed results indicated that the constructed materials showed good radiation protection properties.