Journal Article10.1002/BIO.1232
Studies on the mass and temperature dependence of lyoluminescence intensity of microcrystalline powder of KCl.
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TL;DR: The temperature and mass dependence of lyoluminescence intensity of γ-irradiated colored potassium chloride powder have been studied using a photomultiplier tube connected to an x-y recorder and the dependence of decay time, especially the longer component on mass, has been investigated.
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Abstract: The temperature and mass dependence of lyoluminescence intensity of γ-irradiated colored potassium chloride powder have been studied using a photomultiplier tube connected to an x-y recorder. The peak lyoluminescence intensity increases with increasing amount of solute added up to 50 mg and then tends to saturate. The lyoluminescence (LL) glow curves with mass of KCl microcrystals show that initially the LL intensity increases with time and then decreases exponentially with time. The decay time consists of two components for all the masses. The dependence of decay time, especially the longer component on mass, has been investigated. The temperature dependence of LL intensity shows that initially the peak LL intensity increases with temperature up to 60°C, and then decreases with further increase in temperature. The decay time tends to decrease with increasing temperature. An explanation for the experimental results has been attempted.
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Citations
Systematic study of photoluminescence, lyoluminescence and mechanoluminescence in Ce3+- and Eu3+-activated Li3PO4 phosphors
TL;DR: Light emission originates from the recombination of released F-centres with trapped holes at the sulfuric acid-solid interface, and incorporation of bivalent alkali in solid lithium phosphate leads to an enhancement of lyoluminescence.
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Mechanoluminescence and lyoluminescence characterization of Li2BaP2O7:Eu phosphor
TL;DR: In this paper, mechanoluminescence and lyoluminecence properties of Li 2 BaP 2 O 7 : Eu phosphor are reported Phosphor was synthesized through high temperature solid state diffusion method.
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Experimental and theoretical study of mechanoluminescence and lyoluminescence of Li3PO4: RE (RE=Dy and Tb) phosphors
TL;DR: A more detailed theoretical understanding of the mechanism of LL and ML is reported, which suggests that the LL characteristics of Li3 PO4 may be useful for high radiation doses.
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Effect of lyoluminescence decay in KCl microcrystalline powder in lyoluminescence dosimetry of ionization radiations
S.J. Dhoble,V. Nayar,R. S. Kher,B. P. Chandra,M. S. K. Khokhar +4 more
- 01 Jan 2002
TL;DR: The lyoluminescence (LL) peak intensity of gamma irradiated potassium chloride powder of different particle sizes has been investigated in the mesh range 75-250 μm and upto 425 μm as discussed by the authors.
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References
Lyoluminescence dosimetry part I. Principles
K.V. Ettinger,K.J. Puite +1 more
TL;DR: In this article, the basic processes, physical and chemical, underlying the phenomenon of lyoluminescence (LL) of irradiated materials particularly suited to radiation dosimetry are traced.
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Theoretical approach to the lyoluminescence of alkali halides
TL;DR: In this paper, the intensity of Lyoluminescence (LL) emission depends on different parameters and it can be expressed as I = ηβγαn F N 0 (β − α) { exp (−αt) − exp (−βt)}, where η is the probability of radiative recombination, β the rate constant for the recombination of hydrated electrons with holes, α the rate of dissolution of solute in the solvent, nF the density of F-centres, and t the time of dissolution.
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Preparation of (K:Eu) NaSO4 phosphor for lyoluminescence dosimetry of ionising radiation.
TL;DR: A study on LL properties of Eu activated KNaSO4 and K3Na(SO4)2 gamma irradiated materials is reported, showing the phosphor to be suitable as a lyoluminescence dosimetry phosphor of ionising radiation.
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