Evaluation of trapping parameters of γ‐rays irradiated Dy3+‐doped LaPO4 phosphors
作者： D. M. Pimpalshende , S. J. Dhoble
DOI: 10.1002/BIO.2653
关键词:
摘要: Thermoluminescence (TL) materials are widely used in radiation measurements. The best-known applications of TL the dosimetry ionizing radiation, and CTV screen phosphors, scintillators, X-ray laser materials, etc. glow curve its kinetic parameters for annealed LaPO4 at different constant temperatures Dy3+-doped phosphors irradiated by gamma-rays reported here. samples were using a 60Co gamma-ray source dose 10 Gy heating rate measurements was 5oC/s. characterized diffraction (XRD), Fourier transform infrared, transmission electron microscopy techniques. XRD pattern shows that prepared phosphor has good crystalline structure with an average crystallite size ~ 18 nm. show peaks 0.05, 0.1 0.2 mole % doping concentrations Dy3+ ions anneal above 400oC. characteristics analyzed trapping calculated various methods. All curves obey second-order kinetics single peak, which reveals only one set parameter is particular temperature. sensitivity found to depend upon annealing temperature concentration. sample may be new nano useful dosimetry. Copyright © 2014 John Wiley & Sons, Ltd.
sci-hub.se 参考文章(19)
M. Yu, J. Lin, J. Fu, H. J. Zhang, Y. C. Han, Sol–gel synthesis and photoluminescent properties of LaPO4:A (A = Eu3+, Ce3+, Tb3+) nanocrystalline thin films J. Mater. Chem.. ,vol. 13, pp. 1413- 1419 ,(2003) , 10.1039/B302600K
Reuven Chen, On the Calculation of Activation Energies and Frequency Factors from Glow Curves Journal of Applied Physics. ,vol. 40, pp. 570- 585 ,(1969) , 10.1063/1.1657437
Leonard I. Grossweiner, A Note on the Analysis of First‐Order Glow Curves Journal of Applied Physics. ,vol. 24, pp. 1306- 1307 ,(1953) , 10.1063/1.1721152
Yun Chan Kang, Eun Joung Kim, Dong Youl Lee, Hee Dong Park, High brightness LaPO4:Ce,Tb phosphor particles with spherical shape Journal of Alloys and Compounds. ,vol. 347, pp. 266- 270 ,(2002) , 10.1016/S0925-8388(02)00747-8
NS Gajbhiye, Raghumani Singh Ningthoujam, Asar Ahmed, DK Panda, SS Umare, SJ Sharma, None, Re-dispersible Li+ and Eu3+ co-doped CdS nanoparticles : Luminescence studies Pramana. ,vol. 70, pp. 313- 321 ,(2008) , 10.1007/S12043-008-0050-Z
R. Chen, S. A. A. Winer, Effects of Various Heating Rates on Glow Curves Journal of Applied Physics. ,vol. 41, pp. 5227- 5232 ,(1970) , 10.1063/1.1658652
A. Choubey, S.K. Sharma, S.P. Lochab, D. Kanjilal, Argon ions induced thermoluminescence properties of Ba0.12Sr0.88SO4 phosphor Journal of Physics and Chemistry of Solids. ,vol. 72, pp. 136- 143 ,(2011) , 10.1016/J.JPCS.2010.12.007
S.J. Dhoble, S.V. Moharil, T.K.Gundu Rao, Correlated ESR, PL and TL studies on K3Na(SO4)2 : Eu thermoluminescence dosimetry phosphor Journal of Luminescence. ,vol. 93, pp. 43- 49 ,(2001) , 10.1016/S0022-2313(01)00176-4
A. Halperin, A. A. Braner, Evaluation of Thermal Activation Energies from Glow Curves Physical Review. ,vol. 117, pp. 408- 415 ,(1960) , 10.1103/PHYSREV.117.408
G F J Garlick, A F Gibson, The Electron Trap Mechanism of Luminescence in Sulphide and Silicate Phosphors Proceedings of the Physical Society. ,vol. 60, pp. 574- 590 ,(1948) , 10.1088/0959-5309/60/6/308