OSL properties of KMgF3:Tm3+ for dosimetric applications as OSL dosimeter

Camargo, L.; Cruz, Laura L.; Cruz-Zaragoza, E.; Ovalle, Segundo Martínez; Marcazzó, J.

doi:10.1016/j.apradiso.2018.04.017

Cited by 10 publications

(14 citation statements)

References 21 publications

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“…Tm-doped crystals show two peaks at around 80 and 180 °C. According to previous works, some fluoroperovskite materials exhibit two glow peaks at similar temperatures regardless of the combination of the cation and activator; (15,31,32) therefore, the trapping centers may be related to the fluoroperovskite structure. However, further investigation is required to characterize the trapping centers.…”

Section: Resultsmentioning

confidence: 79%

“…The inset shows the OSL dose response functions of the 0.1% Tm-doped crystal at different monitoring wavelengths. Although the luminescence intensity at 450 nm is higher than that at 360 nm for 500 nm stimulation, a higher intensity was obtained by a shorter stimulation wavelength, similarly to Tm-doped KMgF 3 , (15) and the luminescence intensity for λ sti. /λ mon.…”

Section: Resultsmentioning

confidence: 80%

“…There are some previous works on the dosimetric properties of ABF 3 . (14)(15)(16) In particular, Ce-doped KMgF 3 has been reported to have high sensitivity as much as 40 times that of the commercial dosimetric material C-doped Al 2 O 3 . (17) However, K contains radioisotope 40 K and has intrinsic radioactivity.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Tm Concentration Dependence of Dosimetric Properties of NaMgF3

Takebuchi¹,

Kato²,

Nakauchi³

et al. 2022

Sensors and Materials

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We synthesized Tm-doped NaMgF 3 crystals and investigated their scintillation, optically stimulated luminescence (OSL), and thermally stimulated luminescence (TSL) properties. All the crystals showed multiplex luminescence peaks. Judging from the emission wavelength and scintillation decay time constants, Tm 3+ acts as a luminescence center in NaMgF 3 crystals. The 0.3% Tm-doped crystal showed the highest scintillation, OSL, and TSL intensities. The 0.3% Tm-doped crystal showed a linear relationship from 0.01 to 100 mGy for its TSL dose response function. This lower detection limit is comparable to that of some commercial products. In addition, we succeeded in 2D X-ray imaging using the TSL of the crystal.

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 80%

See 1 more Smart Citation

Characterization of Tm Concentration Dependence of Dosimetric Properties of NaMgF3

Takebuchi¹,

Kato²,

Nakauchi³

et al. 2022

Sensors and Materials

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“…A su vez, las muestras son preparadas por dos métodos diferentes, uno en un crisol de alúmina y el otro en una lámina de platino. Las características dosimétricas de este compuesto se publicaron en el año 2018 [45].…”

Section: Kmgf 3 :Tm 3+unclassified

Caracterización de materiales luminiscentes tejido-equivalentes para la detección de radiación ionizante

Jiménez¹

2022

RIDAA Tesis Unicen

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De manera general, la detección de radiación ionizante se realiza a través de diferentes dosímetros como son: las cámaras de ionización (CI), los diodos, los dosímetros termoluminiscentes (TLD) y los de luminiscencia estimulada ópticamente (OSL), entre otros. Aunque las cámaras de ionización se utilizan en todos los centros de radioterapia, su uso es exclusivo en dosimetría física, la cual se realizan en fantomas de agua, que simulan la consistencia y la densidad de un órgano humano vivo. Las CI son de gran tamaño (∼27mm), necesitan correcciones por recombinación iónica, son frágiles, precisan cableado y presentan dependencia con la energía, lo cual dificulta su implementación en dosimetría clínica. Los diodos son frecuentemente utilizados debido a su tamaño pequeño y medición en tiempo real, no obstante, su respuesta presenta fluctuaciones con la temperatura, exhiben pérdida de sensibilidad con la dosis acumulada, necesitan ser pre-irradiados, deben ser calibrados para cada energía a utilizar y no son tejido-equivalentes. Los TLD son ampliamente utilizados por su buena equivalencia con el tejido biológico, su alta sensibilidad y su posibilidad de reutilización. A pesar del amplio uso de estos dosímetros, diversas organizaciones están migrando hacia la dosimetría OSL debido a las ventajas dosimétricas que posee con respecto a la TLD. Párrafo extraído de la tesis de posgrado a modo de resumen.

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“…For this purpose, recently, we have introduced new OSL materials, such as Ce-doped CsCl, (3) Ce-doped 30Zn 3 (PO 4 ) 2 -70Al(PO 3 ) 3 , (15) Mn-doped LiCa(Ga,Al)F 6 , (16) and rare-earthdoped LiSrAlF 6 . (17) To improve the intensity of the OSL signal, some fluoroperovskite-type materials that have ABF 3 compositions were investigated, (18)(19)(20) and Ce-doped KMgF 3 showed high sensitivity, even forty times than that of C-doped Al 2 O 3 . (21) However, it is necessary to use other elements other than K because K contains a radioactive isotope ( 40 K), which causes intrinsic radioactivity within crystals.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Optically Stimulated Luminescence Properties of Tm-doped NaMgF3 Single Crystal

Takebuchi¹,

Fukushima²,

Kato³

et al. 2020

Sensors and Materials

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Undoped and Tm-doped NaMgF 3 single crystals were synthesized and investigated in terms of their scintillation and optically stimulated luminescence (OSL) properties. The synthesized samples were confirmed by X-ray diffraction to be a single-phase NaMgF 3. The Tm-doped sample showed an X-ray-induced scintillation spectrum characterized by sharp emission lines owing to the 4f-4f transitions of Tm 3+. The OSL spectrum of the Tm-doped sample also showed emission at around 360 nm, which was ascribed to the 4f-4f transitions of Tm 3+. The OSL dose response function of the Tm-doped sample showed a linear response in the dose range of 1-10000 mGy.

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OSL properties of KMgF3:Tm3+ for dosimetric applications as OSL dosimeter

Cited by 10 publications

References 21 publications

Characterization of Tm Concentration Dependence of Dosimetric Properties of NaMgF3

Characterization of Tm Concentration Dependence of Dosimetric Properties of NaMgF3

Caracterización de materiales luminiscentes tejido-equivalentes para la detección de radiación ionizante

Evaluation of Optically Stimulated Luminescence Properties of Tm-doped NaMgF3 Single Crystal

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