Spectrally resolved thermoluminescence of highly irradiated LiF:Mg,Cu,P detectors

Mandowska, E.; Bilski, P.; Obryk, B.; Mandowski, A.; Olko, P.; Kim, J.

doi:10.1016/j.radmeas.2009.11.016

Cited by 21 publications

(10 citation statements)

References 8 publications

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“…The dose response of this peak was linear in the range from 50 kGy to 500 kGy. Brown coloring of TLDs and TL emission spectrum change (Mandowska et al, 2010) can serve as an evidence of the formation of radiation defects at high-dose irradiation in the detector under study. Such defects give rise to new recombination centers responsible for the appearance of high temperature TL peak sensitive to high dose irradiation.…”

Section: High-dose Luminescent Detectors Existing Nowadaysmentioning

confidence: 99%

Advantages and challenges of high-dose thermoluminescent detectors

Кортов

Ustyantsev

2013

Radiation Measurements

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Section: High-dose Luminescent Detectors Existing Nowadaysmentioning

confidence: 99%

Advantages and challenges of high-dose thermoluminescent detectors

Кортов

Ustyantsev

2013

Radiation Measurements

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“…This effect may be attributed to the mentioned in the Introduction changes of the emission spectrum. It was reported that an additional emission band in the MCP emission spectrum is observed at this dose range (Mandowska et al, 2010;Gieszczyk et al, 2013a, b). It seems that, at the high-dose range, the differences in the spectral characteristics of the applied optical filters and photomultipliers, in conjunction with an evolution of the MCP TL emission spectrum, significantly influence the shape of TL glow curves measured with the DA-20 reader.…”

Section: Optical System Spectral Sensitivity Vs High-dose Measurementsmentioning

confidence: 88%

“…These changes are related to the growth of high-temperature TL peaks, including so called peak "B", with maximum located at temperatures as high as 450 o C or even higher (Obryk et al, , 2011b, what makes measurements even up to temperature of 550 o C necessary. Furthermore, some significant changes in the LiF:Mg,Cu,P TL emission spectrum were also observed (Mandowska et al, 2010;Gieszczyk et al, 2013aGieszczyk et al, , 2013b. These changes in the emission spectrum rise questions about influence of spectral sensitivity of readers on highdose measurements, and this issue was also addressed in the work.…”

Section: Introductionmentioning

confidence: 86%

Comparison of commercial thermoluminescent readers regarding high-dose high-temperature measurements

Bilski

Gieszczyk

Obryk

et al. 2014

Radiation Measurements

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Three different thermoluminescent measuring systems have been compared with respect to the differences in temperature profiles, spectral sensitivities, as well as characteristics for high intensities of TL light. The comparison was performed using the Harshaw 3500, Risø DA-20 and RA'94 TLD readers. The instruments were tested for the readouts of highly irradiated LiF:Mg,Cu,P (MCP) TL detectors, which require readout up to 550 o C, in case of doses exceeding 1 kGy. It was found that the Harshaw 3500 can be used, without any additional light attenuation, for the measurements of MCP detectors exposed to doses up to about 5 Gy. For the other two readers the upper dose limit is about 5 times lower. It was also found that the Harshaw 3500 shows the best thermal stability considering the peak maximum position. For the ultra-high doses the differences in the spectral characteristics of the applied optical filters and photomultipliers, in conjunction with an evolution of the MCP TL emission spectrum with increasing dose, significantly influence the shape of TL glow curves measured with the DA-20 reader. The detailed characteristic of the compared TLD readers at high-dose high-temperature range is discussed.

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“…For comparison, samples of lithium fluoride doped with magnesium, copper, and phosphorus LiF:Mg,Cu,P (MCP) were used. MCP is commonly applied thermoluminescent material, which is highly sensitive to ionizing radiation [12], [13]. The thermally stimulated luminescence was measured using a Risoe DA-20 TL/OSL reader (Risoe DTU, Denmark).…”

Section: Methodsmentioning

confidence: 99%

Thermoluminescent Properties of Undoped and Ce-Doped Lutetium Orthosilicate and Yttrium Orthosilicate Single Crystals and Single Crystalline Films Scintillators

Twardak¹,

Bilski²,

Zorenko

et al. 2014

IEEE Trans. Nucl. Sci.

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In this work the comparative analysis of thermoluminescent properties of undoped and Ce-doped single crystals (SC) and single crystalline films (SCF) of (LSO) and (YSO) orthosilicates were performed. The SC samples were prepared with the Czochralski method, and SCF were grown by the liquid phase epitaxy technique. We show that such different methods of material preparation resulted in different thermoluminescent properties of undoped and doped LSO and YSO SC and SCF caused by the presence host defects (first of all, oxygen vacancies) as trapping centers in SC and formation of pair centers in SCF.

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Spectrally resolved thermoluminescence of highly irradiated LiF:Mg,Cu,P detectors

Cited by 21 publications

References 8 publications

Advantages and challenges of high-dose thermoluminescent detectors

Advantages and challenges of high-dose thermoluminescent detectors

Comparison of commercial thermoluminescent readers regarding high-dose high-temperature measurements

Thermoluminescent Properties of Undoped and Ce-Doped Lutetium Orthosilicate and Yttrium Orthosilicate Single Crystals and Single Crystalline Films Scintillators

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