Investigation of gamma-rays and fast neutrons attenuation parameters for NixCo1-xFe2O4 nickel ferrites
The present work aims to study the radiation shielding parameters of new composite nickel ferrites in micro and nano-size. Synthesis of nickel-nano ferrites was carried out using the chemical co-precipitation technique. The measurement of gamma shielding parameters for nano-sized nickel ferrites was...
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Published in | Progress in nuclear energy (New series) Vol. 148; p. 104213 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.06.2022
Elsevier BV |
Subjects | |
Online Access | Get full text |
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Summary: | The present work aims to study the radiation shielding parameters of new composite nickel ferrites in micro and nano-size. Synthesis of nickel-nano ferrites was carried out using the chemical co-precipitation technique. The measurement of gamma shielding parameters for nano-sized nickel ferrites was done experimentally. In addition, the calculations of the shielding parameters for the micro-sized nickel ferrites were carried out using FLUKA-Monte Carlo and WinXCom software. The shielding parameters were given in terms of mass and linear attenuation coefficients, half and tenth-value layer, mean free path, effective atomic number, and effective density of electrons values. Besides, the build-up factor and its parameters were calculated for the proposed shielding material. Fast neutrons effective removal cross-sections were also estimated for the NiCoFe2O4 composite at different Ni/Co ratios. It was found that the highest nickel content (W4), the best gamma radiation attenuation parameters for the proposed composite, with a slight difference between nano and micro-sized samples. The maximum obtained value of mass attenuation coefficient at 661.7 keV was 0.0753 and 0.0751 (cm2/g) for nano- and micro-sized ferrite samples. Furthermore, the highest fast neutron removal cross-section was 0.1562 cm−1 which was achieved with the highest cobalt content sample (W1).
•Shielding parameters of micro and nano nickel ferrites.•FLUKA-MC in the simulation of transmission experiments.•Theoretical calculations of mass and linear attenuation coefficients.•Effective fast neutron removal cross-section. |
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ISSN: | 0149-1970 1878-4224 |
DOI: | 10.1016/j.pnucene.2022.104213 |