Thermoluminescence behavior of magnesium oxide exposed to gamma and ultraviolet radiations

Soliman, C.

doi:10.1080/10420150802349518

Cited by 23 publications

(11 citation statements)

References 27 publications

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“…The linear response was confirmed the tested range and calculated coefficient of determinations of 0.001, 0.01 and 0.1 % Crdoped MgO are 0.9759, 0.9815 and 0.9649, respectively. It is an equivalent sensitivity with commercial personal dosimeters and the highest sensitivity for MgO among the earlier reported works we could find [46][47][48]. Dosimeter having a linear response is advantageous because it enables us to easily and accurately calibrate the dose.…”

Section: Dosimeter Propertiesmentioning

confidence: 95%

Optical, scintillation and dosimeter properties of MgO translucent ceramic doped with Cr3+

2016

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We have investigated the photoluminescence (PL), scintillation and thermally-stimulated luminescence (TSL) dosimeter properties of MgO translucent ceramic doped with Cr 3+ ion (0.001, 0.01 and 0.1 %). The ceramic samples were synthesized by a Spark Plasma Sintering (SPS) technique. The broad and sharp emission peaks appeared around 600-850 nm in all the samples. The PL decay time constants of all the samples were a few ms which were on the typical order of Cr 3+ doped phosphors. As with the PL, the peak resulted from Cr 3+ ion was detected in the scintillation spectra. The TSL glow curves showed the main peak around 140 °C. The TSL response was confirmed to be linear to the irradiation dose over the dose range from 0.1 to 1000 mGy.

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Section: Dosimeter Propertiesmentioning

confidence: 95%

Optical, scintillation and dosimeter properties of MgO translucent ceramic doped with Cr3+

2016

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“…Subsequently, in the later decades, MgO have been intensively studied for dosimeter applications [21][22][23][24][25] due to the bioequivalency. In recent years, with advancement of ceramic fabrication techniques, MgO transparent ceramic was developed [26][27][28][29][30], which shows long afterglow (or persistent luminescence) emission at the wavelength of 390 nm due to the F ＋ center [30].…”

Section: Introductionmentioning

confidence: 99%

Optical, scintillation and dosimeter properties of MgO transparent ceramic and single crystal

Kato

Okada

Yanagida

2016

Ceramics International

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We have synthesized a MgO transparent ceramic by spark plasma sintering (SPS) and studied the dosimeter properties for X-ray detections, in comparison with the single crystal form. Further, we have characterized the optical and scintillation properties. Despite the same material compositions, the photoluminescence (PL) of the ceramic sample showed dominantly around 450 nm whereas the single crystal sample had a dominant emission in the NIR range. The PL lifetime of 450 nm were measured to be ~10 and ~50 ns which were typical for emissions by F + center in MgO. The scintillation spectra were similar to those observed in PL, but the lifetime was much longer on the micro-second scale. The TSL glow curves of MgO ceramic showed a main peak around 140 °C. The TSL spectrum at 140 °C had a broad emission band in the 300-400 range and around 600 and 750 nm, which approximately coincide with the scintillation spectra. The TSL response was confirmed to be linear to the irradiation dose for both samples over the dose range from 0.1 to 1000 mGy.

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“…It is an equivalent sensitivity with commercial personal dosimeters and the highest sensitivity for MgO among the earlier reported works we could find (Boss et al, 2006;Kvatchadze et al, 2007;Soliman, 2009).…”

Section: Dosimeter Propertiesmentioning

confidence: 51%

Dosimeter properties of MgO transparent ceramic doped with C

Kato

Okada

Yanagida

2016

Radiation Measurements

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We have investigated the photoluminescence (PL), scintillation and thermally-stimulated luminescence (TSL) dosimeter properties of MgO ceramic doped with C ions (0.001, 0.01 and 0.1 %). The samples were synthesized by a Spark Plasma Sintering (SPS) technique. The PL emission peaks appeared around 400 and 750 nm in all the samples. The PL decay time constants at 400 nm were ~10 and ~100 ns which were on the typical order of F + center in the undoped MgO. The scintillation emission peaks were detected at 330, 400 and 750 nm under X-ray irradiation. The TSL glow curves showed the ~250 °C peak in 0.1 % C-doped sample. The TSL response was confirmed to be linear to the irradiation dose over the dose range from 0.1 to 1000 mGy. As a result, the sensitivity of MgO was improved by C-doping.

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Thermoluminescence behavior of magnesium oxide exposed to gamma and ultraviolet radiations

Cited by 23 publications

References 27 publications

Optical, scintillation and dosimeter properties of MgO translucent ceramic doped with Cr3+

Optical, scintillation and dosimeter properties of MgO translucent ceramic doped with Cr3+

Optical, scintillation and dosimeter properties of MgO transparent ceramic and single crystal

Dosimeter properties of MgO transparent ceramic doped with C

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