Thermoluminescence of Solids

McKeever, S.W.S.

doi:10.1017/cbo9780511564994

Cited by 912 publications

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“…) and the frequency factor 19 1 23 1 (10 s 10 s s --< < ) were reported for this peak [5][6][7][8][9][10]. However, low values of E and s were also reported for this peak.…”

Section: Introduction Harshaw Lif : Mgtimentioning

confidence: 76%

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Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Sadek

Khamis

Polymeris

et al. 2016

Phys. Status Solidi C

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The kinetic parameters of the glow‐peaks of Harshaw – LiF:Mg, Ti (TLD) and Poland – LiF:Mg,Ti (MTS) dosimeters were investigated at different dose levels using the computerized glow‐curve deconvolution (CGCD) algorithm. The results showed that the glow‐curve structure and the kinetic parameters of the MTS – 6 and the TLD dosimeter are identical. In addition, the glow‐curve structure and the kinetic parameters of the MTS – N and MTS – 7 dosimeters. However, unusual low activation energy (∼1.67 eV) and frequency factor (∼1015 s–1) values were detected for peak 5 of MTS – N, and MTS – 7 at the 50 Gy dose‐level. Moreover, unlike the activation energy and the frequency factor of peak 5 of the TLD dosimeters, the activation energy and the frequency factor of peak 5 of MTS – N and MTS – 7 are substantially dependent on the absorbed dose level. The results also showed that peak 2 of the same dosimeters has also unusual low activation energy and frequency factor values. However, these values showed high stability over the different dose levels. The explanations of these unusual behaviors of peak 5 were discussed and a correlation between peak 2 and peak 5 was pointed out.

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“…) and the frequency factor 19 1 23 1 (10 s 10 s s --< < ) were reported for this peak [5][6][7][8][9][10]. However, low values of E and s were also reported for this peak.…”

Section: Introduction Harshaw Lif : Mgtimentioning

confidence: 76%

“…This may refer to a hidden correlation between the traps respective to peaks 2 and 5 as it was pointed out by others [44,45]. McKeever [5] reported that the thermal annealing studies indicated that peak 5 defects are clusters of whatever defects cause peak 2. Thereby, the two peaks are sharing the unusual low activation energy values.…”

mentioning

confidence: 81%

Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Sadek

Khamis

Polymeris

et al. 2016

Phys. Status Solidi C

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“…Thermoluminescence (TL) is the light emission mainly in visible region that take place during heating of a sample following an earlier exposed to ionizing radiations. Material such as LiF, CaSO 4 , CaF 2 and Al 2 O 3 are good thermoluminescence phosphors because of their applications in dosimetry, age determination and geology or solid-state defect structure analysis [10]. The effective atomic number (Z eff ) is a fundamental property of the TL materials and it is related with radiation interaction processes and latter has direct applications in characterization of wide range of radiological dosimetry, surrogate materials, biological tissues and the calculation of particle interactions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis characterization and luminescence studies of 100MeV Si8+ ion irradiated sol gel derived nanocrystalline Y2O3

Lakshminarasappa

Shivaramu

Nagabhushana

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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a b s t r a c tNanoparticles of pure yttrium oxide (Y 2 O 3 ) have been prepared by sol gel method. The powder X-ray diffraction (PXRD) pattern of as synthesized sample showed the amorphous nature. The as synthesized Y 2 O 3 powders are annealed at 500, 600, 700, 800 and 900°C for 2 h. Y 2 O 3 powder heat treated for 600°C showed cubic phase and the crystallite sizes are found to be $13 nm. Fourier transformed infrared spectroscopy (FTIR) revealed absorption with peaks at 3434, 1724, 1525, 1400, 847, 562 and 465 cm À1 . Photoluminescence (PL) of 100 MeV Si 8+ ion irradiated samples shows emission with peaks at 417, 432, 465 nm. It is found that PL intensity increases with increasing in ion fluence up to $3 Â 10 12 ions cm À2 and then decreases with further increase in ion fluence. A well resolved thermoluminescence (TL) glow with peak at $430 K (Tm 1 ) and an unresolved TL glow with peak at $538 (Tm 2 ), 584 K (Tm 3 ) are observed in ion irradiated samples.

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“…In this behavior shows the peak temperature shifted towards the lower temperature side on increase of heating rate. The heating rate effect of TL studies for 5 mol% of Ag and fixed UV exposure time shows the decreases the peak temperature when increase of heating rate this is the novel behavior proposed by so many authors and also Mckeever in his book thermoluminescence of solids (McKeever et al, 1985;Furetta et al, 2006;.…”

Section: Units) Silver Concentration (Mol %)mentioning

confidence: 74%

Effect of Silver Concentration on Thermoluminescence Studies of (Cd0.95Zn.05)S Phosphors with Trap Depth Parameters Synthesized by Solid State Reaction Method

Tamrakar¹,

Kowar²,

Uplop³

et al. 2014

JLA

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The present paper reports the synthesis and characterization of Ag+ doped (Cd0.95Zn.05)S phosphors. The effect of variable concentration of silver on thermoluminescence (TL) studies was investigated. The samples were prepared by solid state synthesis technique which is suitable for large scale production for phosphors. The starting materials used for sample preparation were CdS, ZnS, (Ag(NO3)3 and sodium chloride was used as a flux during synthesis. The prepared sample was characterized by X-ray diffraction technique (XRD). Sample shows hexagonal structure and the particle size calculated by Scherer's formula. The prepared phosphors were also examined by thermoluminescence technique. For recording TL glow curve every time 2mg phosphor was irradiated by 254nm UV source and fixed the heating rate at 8 0 C s -1 . Sample shows wellresolved peak at 102 0 C for different concentration of Ag + . In addition, the effect of Ag + concentration at fixed UV exposure time was studied. The effect of UV exposure time and dose versus intensity plot were studied. Sample shows linear response with dose and broaden peak with lower temperature shows the less stability and more fading in TL glow curve. Trapping parameters were calculated for every recorded glow curve. The heating rate effect on TL glow curve was also studied. The sample shows the shifting of TL glow curve towards to lower temperature side with increasing of heating rate. The kinetic parameters like trap depth, frequency factor were calculated by using the Peak shape method, which are discussed in details. The TL Glow curves were fitted in CGCD (computerized glow curve convolution deconvolution) technique & trapping parameters calculated.

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Thermoluminescence of Solids

Cited by 912 publications

References 0 publications

Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Synthesis characterization and luminescence studies of 100MeV Si8+ ion irradiated sol gel derived nanocrystalline Y2O3

Effect of Silver Concentration on Thermoluminescence Studies of (Cd0.95Zn.05)S Phosphors with Trap Depth Parameters Synthesized by Solid State Reaction Method

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