期刊
APPLIED RADIATION AND ISOTOPES
卷 69, 期 2, 页码 527-530出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2010.11.002
关键词
CuO nanoparticles; CuO microparticles; X-ray attenuation
类别
资金
- Brazilian Agency Fapesp (Fundacao de Amparo a Pesquisa do Estado de Sao Paulo) [2010/06814-4]
- CNPq [307095/2008-8]
This study presents a comparison of the X-ray transmission through microsized and nanosized materials. For this purpose CuO nanoparticles, with 13.4 nm average grain size, and CuO microparticles, with a mean particle size of 56 mu m, were incorporated separately to beeswax in a concentration of 5%. Results show that the transmission through the above material plates with microsized and nanosized CuO was almost the same for X-ray beams generated at 60 and 102 kV tube voltages. However, for the radiation beams generated at 26 and 30 kV tube voltages the X-rays are more attenuated by the nanostructured CuO plates by a factor of at least 14%. Results suggest that the difference in the low energy range may be due to the higher number of particles/gram in the plates designed with CuO nanoparticles and due to the grain size effect on the X-ray transmission. (C) 2010 Elsevier Ltd. All rights reserved.
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