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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
K
3
Na(SO
4
)
2
: EEEu nanoparticles for high dose of ionizing radiation
Journal of Physics D: Applied Physics, Volume 40, No. 3, Article 011, Year 2007
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Description
K3Na(SO4)2 : Eu nanocrystalline powder was synthesized by the chemical co-precipitation method. The x-ray diffraction pattern of the nanomaterials shows a hexagonal structure for its crystals having grain size of ∼28 nm. Transmission electron microscopy revealed that the K3Na(SO4)2 : Eu nanoparticles are single crystals with almost a uniform shape and size. Thermoluminescence (TL) was taken after irradiating the samples at various exposures of γ-rays from a 60Co source. A prominent TL glow peak is observed at 423 K along with three small peaks/shoulders at around 382, 460 and 509 K. The observed TL sensitivity of the prepared nanocrystalline powder is around 4 times more than that of LiF : Mg,Ti (TLD-100) phosphor. The 423 K peak of the nanomaterial phosphor eventually shows a near linear response with exposures increasing up to very high values (as high as 70 kGy), where all the other TLD phosphors saturate. This property along with its other desired properties such as high sensitivity, relatively simple glow curve structure and low fading makes the nanocrystalline phosphor a suitable dosimeter to estimate low as well as high exposures of γ-rays. TL analysis using the glow curve deconvolution technique was also done for determining different trapping parameters. © 2007 IOP Publishing Ltd.
Authors & Co-Authors
Sahare, Purushottam Dinanath
India, New Delhi
University of Delhi
India, Pune
Savitribai Phule Pune University
Ranjan, Ranju
India, New Delhi
University of Delhi
Salah, Numan A.
Yemen, Thamar
Thamar University
Lochab, Satya Pal
India, New Delhi
Inter University Accelerator Centre India
Statistics
Citations: 102
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1088/0022-3727/40/3/011
ISSN:
00223727
e-ISSN:
13616463
Research Areas
Cancer