Study of the luminescent properties of KMgF3:Sm

Marcazzó, J.; Santiago, M.; D'Angelo, Cristian A.; Furetta, C.; Caselli, E.

doi:10.1016/j.nimb.2009.10.188

Cited by 25 publications

(13 citation statements)

References 22 publications

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“…KMgF 3 :Sm has been synthesized previously using the Kiropoulos technique and TL properties have been studied by exposing the samples to electron beams . It was observed that KMgF 3 :Sm doped with 0.020 mol % samarium had the highest TL intensity.…”

Section: A Few Highly Sensitive Tld Phosphorsmentioning

confidence: 99%

“…It was observed that KMgF 3 :Sm doped with 0.020 mol % samarium had the highest TL intensity. The TL glow curve was found to be made up of five peaks, out of which the third peak was the best suited to be applied in personal and environmental dosimetry, as it showed linearity in the dose range 0.02–200 Gy and no fading at room temperature …”

Section: A Few Highly Sensitive Tld Phosphorsmentioning

confidence: 99%

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Versatility of thermoluminescence materials and radiation dosimetry – A review

et al. 2019

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Thermoluminescence (TL) materials exhibit a wide range of applications in different areas such as personal dosimetry, environmental dosimetry, medical research etc.Doping of different rare earth impurities in different hosts is responsible for changing the properties of materials useful for various applications in different fields. These materials can be irradiated by different types of beams such as γ-rays, X-rays, electrons, neutrons etc. Various radiation regimes, as well as their dose-response range, play an important role in thermoluminescence dosimetry. Several TL materials, such as glass, microcrystalline, nanostructured inorganic materials and recently developed materials, are reviewed and described in this article.

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Section: A Few Highly Sensitive Tld Phosphorsmentioning

confidence: 99%

Section: A Few Highly Sensitive Tld Phosphorsmentioning

confidence: 99%

Versatility of thermoluminescence materials and radiation dosimetry – A review

et al. 2019

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“…N1 is slightly near to TLD-100. TL materials with high sensitivity allow for their utilization in the assessment of low doses [8,9]. …”

Section: Regressionmentioning

confidence: 99%

Thermoluminescence (TL) dosimeter of dysprosium doped strontium borate glass for different glass modifiers (Na, Li, Ca) subjected from 1 to 9 Gy doses

et al. 2017

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Abstract. This article reports TL response for different glass modifier and doping concentration. Alkali oxides (Na2O and Li2O) and alkali earth oxide (CaO) will be used as a glass modifier for strontium borate based glass. The samples were prepared by melt quenching technique. Dy2O3 concentrations ranging from 0.00 to 0.70 mol% and exposure doses of 1 to 9 Gy will be varied. All glass samples exhibit the prominent peak temperature positioned at 186 o C to 232 o C. From all the samples, one of the samples shows an excellent linearity dose response, higher TL and show good reproducibility after 5 cycles exposure which is sodium strontium borate doped with 0.1 mol% Dy2O3 (optimum concentration). IntroductionThermoluminescence dosimeter (TLD) has been widely applied in clinical, personal and environmental of ionizing radiation areas. Borate glass for better dosimeter materials were chosen due to is near tissue equivalent absorption coefficient, high thermal stability, low melting point and good solubility of rare earth ions [1]. The hygroscopic behavior of pure borate glass represents a serious drawback since humidity has often gives contrary effect on the performance of TL materials. Therefore, many investigations have been conducted to improve the performance of borate based dosimeters and explore the new TL materials. Strontium tetraborate is one of the potential candidates since it is not hygroscopic as normally exhibited by other borate compounds [2]. It is reported that the sensitivity of polycrystalline dysprosium doped strontium tetraborate is five times higher compared to LiF: Mg, Ti [3].Up to now, there are no research study TLD properties on strontium borate glass system. So, in this study strontium borate glass with different modifiers alkali oxides (Na2O and Li2O) and alkali earth oxide (CaO) in glassy form and have investigated for the first time its thermoluminescence dosimeter (TLD) properties. Alkali oxide and alkali earth oxides are very good materials for modifying borate glasses because of their possible applications in radiation absorbent. [4,5]. The addition of dysprosium (Dy) as an activator was chosen in this research to enhance the high TL efficiency [6]. The aims of this study is to investigate the TL properties of dysprosium doped with different modifiers (Na2O, Li2O and CaO) of strontium borate glasses exposed to 60 Co Gamma irradiation. The best modifier of strontium borate glass with optimum concentration of Dy doping will gives the best TL properties such as glow curve, TL dose response, reproducibility, sensitivity to radiation and fading characteristics of the response. A small amount of dysprosium oxide (Dy2O3) was added to confirm the role as activator on TL dosimetry response.

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“…X-ray-induced phenomena, such as photoionization, have been studied to develop high-sensitivity Xray detectors [1,2,3]. The ions that have undergone valence changes can be observed after irradiation and are detected by luminescence techniques, which are highly sensitive, non-destructive, and simple.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence of Valence-Changed Samarium Ions in Sintered BaSO₄Induced by X-ray Radiation

Maeda

Kumeda

Arimura

et al. 2015

J. Phys.: Conf. Ser.

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Abstract. The conversion of ionic valence induced by X-ray irradiation can possibly be applied in X-ray imaging devices. Here, we report the X-ray irradiation time dependence of the valence change of Sm ions doped in a BaSO 4 matrix. The samples were prepared by sintering a mixture of BaSO 4 and Sm 2 O 3 powder. The as-prepared sample consisted mainly of Sm 3+. Sm 2+and Sm 3+ were detected by using the photoluminescence (PL) spectral shapes. After X-ray irradiation (λ = 0.154 nm), the PL intensity of the Sm 2+ increased proportionally to the X-ray irradiation time from 4 to 1000 s. The intensity began to saturate at more than 1000 s. The intensity of Sm 3+ was constant regardless of the increasing Sm 2+ intensity.

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Study of the luminescent properties of KMgF3:Sm

Cited by 25 publications

References 22 publications

Versatility of thermoluminescence materials and radiation dosimetry – A review

Versatility of thermoluminescence materials and radiation dosimetry – A review

Thermoluminescence (TL) dosimeter of dysprosium doped strontium borate glass for different glass modifiers (Na, Li, Ca) subjected from 1 to 9 Gy doses

Photoluminescence of Valence-Changed Samarium Ions in Sintered BaSO₄Induced by X-ray Radiation

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Study of the luminescent properties of KMgF3:Sm

Cited by 25 publications

References 22 publications

Versatility of thermoluminescence materials and radiation dosimetry – A review

Versatility of thermoluminescence materials and radiation dosimetry – A review

Thermoluminescence (TL) dosimeter of dysprosium doped strontium borate glass for different glass modifiers (Na, Li, Ca) subjected from 1 to 9 Gy doses

Photoluminescence of Valence-Changed Samarium Ions in Sintered BaSO4Induced by X-ray Radiation

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Photoluminescence of Valence-Changed Samarium Ions in Sintered BaSO₄Induced by X-ray Radiation