Title

Study of some gamma ray attenuation parameters for new shielding materials composed of NANO ZnO blended with high density polyethylene

Document Type

Article

Abstract

The extensive utilization of radiation is rapidly developing worldwide involving abundant fields like medical, industrial, research, and nuclear facilities. This makes the need for study-ing radiation shielding materials and their properties more urgent than ever. In the present study, bulk and nano ZnO were mixed by the same ratio each time (10, 20, 30, and 40 wt.%), with high-density polyethylene as a polymer matrix and characterized by X-ray diffraction. The results confirmed the good dispersion of bulk and nano ZnO particles within the polymer matrix. The prepared composite samples were used in different thicknesses as gamma ray shielding materials, and the heaviness was calculated and compared to lead. Using HPGe de-tector at specific energies (59.53, 356.01, 661.66, 1173.33, and 1332.50 keV) for different radioactive point sources (241Am, 133 Ba, 137 Cs, and60Co), the mass attenuation coefficient for the samples was measured experimentally. Depending upon the obtained values, the linear at-tenuation coefficient, half-value layer, tenth value layer, heaviness and relaxation length were estimated. Using the XCOM database, the values of linear attenuation coefficient, mass atten-uation coefficient, and other parameters were calculated theoretically for the bulk ZnO blended with high-density polyethylene. The obtained results were compared to the experi-mental values for nano and bulk ZnO blended with high density polyethylene. The radiation shielding behavior of nano ZnO blended with high density polyethylene was found to be more promising and efficient for radiation protection against gamma ray.

Publication Date

12-1-2019

Faculty

Faculty of Applied Health Sciences Technology

Subject Area

Physical Sciences, General Energy, General Engineering

Indexed in Scopus

yes

Indexed in Web Of Science

yes

DOI

https://doi.org/10.2298/NTRP190718033A

Volume

34

Keywords

Bulk ZnO, Composite sample, High-density polyethylene, Mass attenuation coefficient, Nano ZnO, Radiation shielding material

ISSN

14513994

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