Journal of Nuclear Science, Engineering and Technology (JONSAT)
In cooperation with the Iranian Nuclear Society

Investigation of nanophosphor of SrSO4 activated by Sm and Tb as a potential UV detector

Document Type : Research Paper

Authors

P. Aminpoor
Kh. Rezaee Ebrahim Saraee
K. Bazari Jamkhaneh

Department of Nuclear Engineering, Faculty of Advanced Sciences and Technologies, University of Isfahan, P.O.Box: 81746-73441, Isfahan – Iran

https://doi.org/10.24200/nst.2020.1111
Abstract
In this research, nanocrystalline powder of SrSO4: Sm was prepared by chemical co-precipitation method at room temperature. The SrSO4: Sm nanocrystalline powder was characterized using X-ray diffraction (XRD) and energy-dispersive x-ray spectroscopy (EDX), thermoluminescence (TL) and photoluminescence (PL). Under UV irradiation, all samples had a main peak at 220˚C. The advantage of this nanocrystalline powder is a simple TL glow peak in the temperature above 200˚C for UV radiation dosimetric. The results showed that changing Sm concentration affected the TL glow curve intensity and the maximum intensity of the TL glow curve of SrSO4: Sm was obtained for Sm with 0.15 mol%. The TL response of the SrSO4: Smirradiated with different UV irradiation time showed a linear behavior from 10-90 minutes. The fading of this nanocrystalline powder was less than 16% for 4 weeks. Moreover, the emission spectra of the SrSO4: Smnanocrystalline powder under excitation wavelength 320 nm showed peaks in the 690 and 725 nm wavelengths which were related to 4G5/2-6H11/2 and 4G5/2-6H13/2, respectively.

Highlights

1.             G.F. Knoll, Radiation detection and measurement, 4th Ed, (John Wiley & Sons, 2010).

 

2.             Comprehensive guide and guidelines for radiation health (non-ionization radiation), (Institute of Environmental Science, Medical University Tehran, 1391).

 

3.             M.R. Abdi, A.R. Alizadeh, Introduction on UV and its effect on environment, (University of Isfahan, 1388).

 

4.             P. Gupta, et al, Thermoluminescence and glow curves analysis of γ-exposed Eu3+ doped K3Y (PO4)2 nanophosphors, Mater. Res. 73, 111 (2016).

 

5.             M. Kumar, et al, Dependence of peak  height of glow curves on heating rate in thermoluminescence, J. Lumin, 130 (7), 1216 (2010).

 

6.             A.H. Wako, M. Chithambo, A. Finch, Thermoluminescence of SrAl2O4: Eu2+, Dy3+: Kinetic analysis of a composite-peak, Radiat. Meas. 97, 1 (2016).

 

7.             S. Jayasudha, et al, Structural characterization, thermoluminescence studies and kinetic parameters of SrSO4:Eu nanophosphors under X-ray and gamma excitations, Spectrochim Acta A, 155, 21 (2016).

Keywords

Ultraviolet radiation
Thermoluminescence
Strontium sulfate (SrSO4)
1.             G.F. Knoll, Radiation detection and measurement, 4th Ed, (John Wiley & Sons, 2010).
 
2.             Comprehensive guide and guidelines for radiation health (non-ionization radiation), (Institute of Environmental Science, Medical University Tehran, 1391).
 
3.             M.R. Abdi, A.R. Alizadeh, Introduction on UV and its effect on environment, (University of Isfahan, 1388).
 
4.             P. Gupta, et al, Thermoluminescence and glow curves analysis of γ-exposed Eu3+ doped K3Y (PO4)2 nanophosphors, Mater. Res. 73, 111 (2016).
 
5.             M. Kumar, et al, Dependence of peak  height of glow curves on heating rate in thermoluminescence, J. Lumin, 130 (7), 1216 (2010).
 
6.             A.H. Wako, M. Chithambo, A. Finch, Thermoluminescence of SrAl2O4: Eu2+, Dy3+: Kinetic analysis of a composite-peak, Radiat. Meas. 97, 1 (2016).
 
7.             S. Jayasudha, et al, Structural characterization, thermoluminescence studies and kinetic parameters of SrSO4:Eu nanophosphors under X-ray and gamma excitations, Spectrochim Acta A, 155, 21 (2016).

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