The role of impurities in thermally stimulated luminescence of MgO:Mn<sup>2+</sup> and MgO:V<sup>2+</sup> crystals irradiated in a reactor

Kvatchadze, V.; Dekanozishvili, G.; Galustashvili, M. V.; Kalabegishvili, T.; Keratishvili, N.; Zardiashvili, D.

doi:10.1002/pssa.200622543

Cited by 7 publications

(4 citation statements)

References 7 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: 97%

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: 97%

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

2016

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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: 50%

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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“…All measurements were made at the room temperature. TSL curves were registered by a high-temperature (300-775 K) computerized device in the regime of photon counting with the permanent velocity of sample heating 1 K/s [3].…”

Section: Samples and Methodsmentioning

confidence: 99%

“…The spectral analysis of the TSL peak at 450 K carried out by interference filters showed its complex nature [3]. This is caused, at least, by two factors: by structural defects of vacancy type (emission at 405 nm and 514 nm that refers to F + -and F-centers, respectively) and by impurity ions (emission at 457 nm, 617 nm, and 660 nm caused by the ions of transition metals 2+…”

Section: Samples and Methodsmentioning

confidence: 99%

Influence of post‐radiation deformation on TSL and absorption spectra of irradiated MgO crystals

Kvatchadze¹,

Dekanozishvili²,

Galustashvili³

et al. 2008

Physica Status Solidi (a)

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Thermally stimulated luminescence (TSL) and optical and paramagnetic absorption spectra of MgO and MgO:V2+ have been investigated after quasi‐elastic and plastic deformations. Splitting of the low‐temperature peak (∼450 K) in TSL curves caused by the deformation in both nominally pure and impure crystals is explained by the formation of an excess of vacancies. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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The role of impurities in thermally stimulated luminescence of MgO:Mn²⁺ and MgO:V²⁺ crystals irradiated in a reactor

Cited by 7 publications

References 7 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+

Dosimeter properties of MgO transparent ceramic doped with C

Influence of post‐radiation deformation on TSL and absorption spectra of irradiated MgO crystals

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The role of impurities in thermally stimulated luminescence of MgO:Mn2+ and MgO:V2+ crystals irradiated in a reactor

Cited by 7 publications

References 7 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+

Dosimeter properties of MgO transparent ceramic doped with C

Influence of post‐radiation deformation on TSL and absorption spectra of irradiated MgO crystals

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Product

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The role of impurities in thermally stimulated luminescence of MgO:Mn²⁺ and MgO:V²⁺ crystals irradiated in a reactor