Thermoluminescence studies of CaSO4:Dy,P,Si phosphor under X-ray irradiation

Nair, Resmi G.; Madhukumar, K.; Nair, C.M.K.; Jayasudha, S; Anandakumar, V.M.; Elias, T.S.; Komath, Manoj

doi:10.1016/j.ceramint.2017.11.086

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…To investigate the precision of the dosage calculations was introduced by [15], as displayed in equation (5). Two parameters depend on this formula, the standard deviation of low-dose TL yields and the standard deviation of high-dose TL yields.…”

Section: Precisionmentioning

confidence: 99%

“…The advantage of passive detectors compared to active detectors is their ability to store radiation, which can be readout subsequently. TLD is a commonly used passive detector because of its ability to display high sensitivity and strong linearity between the doses stored, and the charge measured [5]. TLD systems are in a position in the area of nuclear facilities to track all pre-operative levels (background levels) and above-natural background levels that could be related to the activity of such installations.…”

Section: Introductionmentioning

confidence: 99%

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Dosimetric characteristics investigation of ZnO/Ag/ZnO multilayer film for radiation applications

Thabit

Kabir

Ismail

et al. 2022

J. Phys.: Conf. Ser.

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The dosimetric properties of synthetic ZnO/Ag/ZnO multilayer film are investigated. The proposed dosimeter was prepared by radio frequency and direct current RF/DC sputtering and irradiated with X-ray doses up to 4 Gy. The properties of thermoluminescence (TL) such as glow curve, dose-response, homogeneity batches, sensitivity, minimum detectable dose (MMD), precision, kinetic parameters (activation energy E, frequency factor S), and percentage depth dose (PDD) were studied. The thin film appeared to have an excellent linear response, and the sensitivity was almost twice the commercial TLD. The readout of the homogeneity and PDD are the same properties of TLD-100. These desirable qualities demonstrated the versatility of this novel synthetic thin film in applications involving radiation detection.

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Section: Precisionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dosimetric characteristics investigation of ZnO/Ag/ZnO multilayer film for radiation applications

Thabit

Kabir

Ismail

et al. 2022

J. Phys.: Conf. Ser.

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“…Additionally, phototransferred thermoluminescence (PTTL) was observed in CaSO 4 :Mg when exposed to blue light (470 nm) [14]. The results of TL studies on the CaSO 4 :Dy,P phosphor with 0.1 mol% Si co‐doping under X‐ray irradiation showed a fading rate of ~2% over a period of 90 days and 1.09 relative sensitivity compared with CaSO 4 :Dy (Standard) [15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO₄ thermoluminescent phosphor using coprecipitation technique

Mohamed,

Salama,

Alazab

et al. 2024

Luminescence

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In this work, (99 − x)CaSO4‐Dy2O3–xEu2O3, (where x = 0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5) thermoluminescence phosphors were prepared using a coprecipitation method. The thermoluminescence (TL) dosimetry (TLD) characteristics such as TL sensitivity, dose–response, minimum detectable dose, thermal fading, and the effect of sunlight on the prepared phosphors were investigated. The obtained results indicated that the most sensitive phosphor was obtained at x = 0.05. Large thermal fading of 6% after 1 h and 26% after 24 h from irradiation followed by 71% after 1 month with no additional fading was observed within a time frame exceeding 2 months throughout the remaining duration of the investigation, which also spanned over 2 months. Despite the phosphor's high fading rate, the relative sensitivity of the prepared samples was ~90% compared with TLD‐100. The marked effect of day sunlight was also determined. High dose–response within the low‐dose range from 0.01 to 5 Gy was observed. The obtained results suggested that the synthesized phosphor is well suited for applications involving radiation biology and radiotherapy dosimetry.

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“…Based on this, the performance of the dosimeter should be revised to check the sensitivity and stability for a long time [4][5][6][7][8]. Many dosimeters (TLD) are commercially used in radiation measurements to demonstrate prominent sensitivity and virtue linear dose response among the measured charge and the delivery doses [9]. The thermoluminescence (TL) of lithium fluoride (LiF) is linked with titanium (Ti) and magnesium (Mg) impurities present, which are well-known as TLD-100, and LiF impurities with Mg, copper (Cu), and phosphorus (P) are known as TLD-100H [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence and thermoluminescence dosimetry properties of Ag/Y co‐doped ZnO nanophosphor for radiation measurements

Abdurabu Thabit,

Ismail,

Kabir

et al. 2024

Luminescence

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This work explores the thermoluminescence (TL) and photoluminescence (PL) properties of Ag/Y co‐doped zinc oxide (ZnO) nanophosphor. The proposed dosimeter was prepared by the coprecipitation method and sintered at temperatures from 400°C to 1000°C in an air atmosphere. Raman spectroscopy was studied to investigate the structural features of this composition. The new proposed dosimeter revealed two peaks at 150°C and 175°C with a small shoulder at high temperature (225°C). The PL spectrum showed strong green emissions between 500 to 550 nm. The Raman spectrum showed many bands related to the interaction between ZnO, silver (Ag), and yttrium oxide (Y2O3). The rising sintering temperature enhanced the TL glow curve intensity. The Ag/Y co‐doped ZnO nanophosphor showed an excellent linearity index within a dose from 1 to 4 Gy. The minimum detectable dose (MDD) of the Ag/Y co‐doped ZnO nanopowder (pellets) equaled 0.518 mGy. The main TL properties were achieved in this work as follows: thermal fading (37% after 45 days at 1 and 4 Gy), optical fading (53% after 1 h and 68% after 6 h by exposure to sunlight), effective atomic number (27.6), and energy response (flat behavior from 0.1 to 1.3 MeV). Finally, the proposed material shows promising results nominated to be used for radiation measurements.

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Thermoluminescence studies of CaSO4:Dy,P,Si phosphor under X-ray irradiation

Cited by 11 publications

References 12 publications

Dosimetric characteristics investigation of ZnO/Ag/ZnO multilayer film for radiation applications

Dosimetric characteristics investigation of ZnO/Ag/ZnO multilayer film for radiation applications

Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO₄ thermoluminescent phosphor using coprecipitation technique

Photoluminescence and thermoluminescence dosimetry properties of Ag/Y co‐doped ZnO nanophosphor for radiation measurements

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Thermoluminescence studies of CaSO4:Dy,P,Si phosphor under X-ray irradiation

Cited by 11 publications

References 12 publications

Dosimetric characteristics investigation of ZnO/Ag/ZnO multilayer film for radiation applications

Dosimetric characteristics investigation of ZnO/Ag/ZnO multilayer film for radiation applications

Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO4 thermoluminescent phosphor using coprecipitation technique

Photoluminescence and thermoluminescence dosimetry properties of Ag/Y co‐doped ZnO nanophosphor for radiation measurements

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Product

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Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO₄ thermoluminescent phosphor using coprecipitation technique