Nuclear Technology & Radiation Protection Journal


NT & RP Journal	PARTICLE SIZE AND CONCENTRATION EFFECTS ON LOW ENERGY X-RAY ATTENUATION IN NANOSTRUCTURE AND MICROSTRUCTURE MATERIALS
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Vol. XXXIII, No. 1, Pp. 1-138 March 2018 UDC 621.039+614.876:504.06 ISSN 1451-3994 Back to Contents	Pages: 75-80 Authors: Samira Sarshough, Kamal Hadad, and Reza Faghihi Abstract The effects of microsize and nanosize particles in composite structures as well as the incident radiation energy on X-ray attenuation is the focus of this study. To examine these effects, composite samples with different particle sizes of Al₂O₃ and with different thicknesses were prepared. Characteristic X-rays are applied as monochromatic X-rays and measurements were performed using an X-ray tube with a secondary excitation source instead of radioisotopes. In order to improve the efficiency and minimize the background effects a special detection system was designed and prepared. The linear attenuation coefficients of these samples are measured for X-ray photo energies of 6.40-28.49 keV. The results show that these low energy X-ray beams are more attenuated by nano-structured material compared to the micro-structured one. Key words: linear attenuation coefficient, characteristic X-ray, nanostructure, microstructure FULL PAPER IN PDF FORMAT (794 KB)
Vinča Institute of Nuclear Sciences :: Designed by milas :: July 2007 Operated by acapanic :: Last updated on June, 2018

Pages: 75-80

Authors: Samira Sarshough, Kamal Hadad, and Reza Faghihi

Abstract

The effects of microsize and nanosize particles in composite structures as well as the incident radiation energy on X-ray attenuation is the focus of this study. To examine these effects, composite samples with different particle sizes of Al₂O₃ and with different thicknesses were prepared. Characteristic X-rays are applied as monochromatic X-rays and measurements were performed using an X-ray tube with a secondary excitation source instead of radioisotopes. In order to improve the efficiency and minimize the background effects a special detection system was designed and prepared. The linear attenuation coefficients of these samples are measured for X-ray photo energies of 6.40-28.49 keV. The results show that these low energy X-ray beams are more attenuated by nano-structured material compared to the micro-structured one.

Key words: linear attenuation coefficient, characteristic X-ray, nanostructure, microstructure

FULL PAPER IN PDF FORMAT (794 KB)