Thermoluminescence kinetic study of binary lead-silicate glasses

Pagonis, Vasilis; Mian, Shabbir; Mellinger, R.; Chapman, Karena

doi:10.1016/j.jlumin.2008.12.016

Cited by 22 publications

(9 citation statements)

References 19 publications

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“…The paramagnetic centers remained stable at temperatures up to 450 K and were annealed after holding for 10 min at the given temperature. This is in good agreement with the data of investigations of thermostimulated luminescence and exoemission presented in [6,10].…”

Section: Discussionsupporting

confidence: 93%

“…A variety of oxygen bonds with lead and silicon atoms can cause the formation of polytypic structural motives determining the energy band structure [7,8]. At the same time, possible correlation of the atomic structure, energy structure, and mechanisms of forming radiation-induced defects in PbO-SiO 2 glasses has not yet been discussed in detail [5,6,9,10].…”

Section: Introductionmentioning

confidence: 99%

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Radiation-Induced Centers in Lead Silicate Glasses Irradiated by Stationary and Pulsed Electron Beams

2015

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Radiation-induced centers formed in heavy flint glasses irradiated by electron beams are investigated by the methods of optical and EPR spectroscopy. It is revealed that stable and short-living optical absorption centers of close natures are formed under irradiation by fast electrons. A correlation is established between the stable optical absorption bands and the EPR signals interpreted as signals of the (Pb 2+ )/h + hole centers. The shortliving color centers are formed due to short-term distortion of the O-Pb bonds, and the stable centers are formed due to the spatial separation, thermalization, and subsequent stabilization of excited electrons and holes in tails of the localized states. Irradiation by electron beams leads to a change in the spectral characteristics of the fundamental absorption edge and, in particular, of the Urbach energy that determines the degree of structural disorder.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Radiation-Induced Centers in Lead Silicate Glasses Irradiated by Stationary and Pulsed Electron Beams

2015

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“…For the last few years, heavy metal oxide (HMO) glasses are being intensively studied due to their optimal properties for photonics and electronic applications [1,2]. For instance, lead borate glasses present very interesting features such as optically transparency from the visible to the near-infrared range, wide compositional regions of PbO content in the host glass matrix, resistance against devitrification, high refractive index and density, good transmittance in the UV-region and enhanced radiation shielding for ␥-ray [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Structural studies of lead lithium borate glasses doped with silver oxide

Coelho

Freire

Hussain

2012

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Silver oxide doped lead lithium borate (LLB) glasses have been prepared and characterized. Structural and composition characterization were accessed by XRD, FTIR, Raman, SEM and EDS. Results from FTIR and Raman spectra indicate that Ag(2)O acts as a network modifier even at small quantities by converting three coordinated to four coordinated boron atoms. Other physical properties, such as density, molar volume and optical basicity are also evaluated. Furthermore, they are also affected by the silver oxide composition.

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“…However the fact that this decay is not equally efficient for the fast and slower components may suggest the way of component separation consisting in gradual optical "cleaning" of more and more slower components by repetition of several OSL measurements after one excitation (Hsieh et al, 2012;Kitis and Pagonis, 2008;Singarayer et al, 2000). The premise accepted here is that when one bleaches the major part of faster component, the next slower component can be observed more clearly as it is successfully realized by the so-called thermal "cleaning" in thermoluminescence analysis (Isik et al, 2012;Fasoli et al, 2010;Pagonis et al, 2009). Because literature lacks data concerning the influence of the optical "cleaning" on the subsequent OSL process, it is difficult to determine whether the analysis of the experimental results obtained as a result of such method can be useful.…”

Section: Introductionmentioning

confidence: 99%

Estimation of OSL trap parameters by optical “cleaning” — a critical study

Kijek

Chruścińska

2014

Geochronometria

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Abstract:The so-called thermal "cleaning" applied in thermoluminescence analysis allows distinguishing TL signal originating from different traps of comparable thermal depths. Here, the detailed study on the suitability of a similar approach -which can be called optical "cleaning" -for the analysis of OSL process has been carried out by means of computer modelling. The optical "cleaning" is realized by short optical stimulation applied directly after irradiation. It turns out that this approach does not help to separate signals related to various traps having similar optical cross-section (OCS) values. For some sets of trap parameters, sufficiently good reconstruction of the trap optical cross-sections can be achieved by the analysis of the conventional OSL curve obtained directly after sample irradiation, while the OSL curve analysis after "cleaning" does not provide any additional data. For other cases the analysis of both curves with and without "cleaning" leads to optical crosssection values different from those assumed in the model, but just in such situations the optical "cleaning" can be helpful. The differences between the OSL components of the conventional curve and the one obtained after "cleaning" can be used as indicators of an incompatibility of the trap parameters obtained from the OSL analysis with their actual values.

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Thermoluminescence kinetic study of binary lead-silicate glasses

Cited by 22 publications

References 19 publications

Radiation-Induced Centers in Lead Silicate Glasses Irradiated by Stationary and Pulsed Electron Beams

Radiation-Induced Centers in Lead Silicate Glasses Irradiated by Stationary and Pulsed Electron Beams

Structural studies of lead lithium borate glasses doped with silver oxide

Estimation of OSL trap parameters by optical “cleaning” — a critical study

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