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Madkhli AY, Jabali DA, Souadi G, Sonsuz M, Kaynar UH, Akça-Özalp S, Ayvacikli M, Madkhali O, Topaksu M, Can N. Beta irradiation-induced thermoluminescence: Glow curve analysis and kinetic parameters in combustion-synthesized undoped Ca 4YO(BO 3) 3. Appl Radiat Isot 2024; 208:111301. [PMID: 38522263 DOI: 10.1016/j.apradiso.2024.111301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/09/2024] [Accepted: 03/19/2024] [Indexed: 03/26/2024]
Abstract
This study examines the thermoluminescent (TL) properties of undoped Ca4YO(BO3)3 phosphor, focusing on how it behaves under a variety of experimental conditions. The IRSL-TL 565 nm was chosen as the appropriate detection filter among various optical detection filter combinations. During the preheating trials conducted at a rate of 2 °C/s, the TL peak exhibited increased intensity, particularly around 200 °C. The experimental outcomes demonstrated a reliable linear relationship (R2 = 0.996 and b = 1.015) in the dose response of undoped preheated Ca4YO(BO3)3 within the range of 1-200 Gy. The investigation encompasses a range of techniques, including the TM-Tstop method, computerized glow curve deconvolution (CGCD) analysis, and theoretical modelling. The application of the TM-Tstop method to samples irradiated with a 5 Gy dose revealed distinct zones on the TM versus Tstop diagram, signifying the presence of at least two discernible components within the TL glow curve, specifically, a single general order kinetics peak and a continuous distribution. The analysis of activation energy versus preheated temperature exhibited a stepwise curve, indicating five trap levels with depths ranging between 1.13 eV and 1.40 eV. The CGCD method also revealed the superposition of at least five distinct TL glow peaks. It was observed that their activation energies were consistent with the Tm-Tstop experiment. Furthermore, the low Figure of Merit (FOM) value of 1.18% indicates high reliability in the goodness-of-fit measure. These findings affirm the reliability and effectiveness of the employed methods in characterizing the TL properties of the Ca4YO(BO3)3 phosphor under investigation. Theoretical models, including the semi-localized transition model, were introduced to explain anomalous observations in TL glow peak intensities and heating rate patterns. While providing a conceptual framework, these models may require adjustments to accurately capture the specific characteristics uncovered through CGCD analysis. As a potential application, the study suggests that the characterized TL properties of Ca4YO(BO3)3 phosphor could be utilized in dosimetric applications, such as radiation dose measurements, owing to its reliable linear response within a broad dose range.
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Affiliation(s)
- A Y Madkhli
- Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia
| | - D A Jabali
- Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia
| | - G Souadi
- Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia
| | - M Sonsuz
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkiye
| | - U H Kaynar
- Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkiye; Bakırçay University, Biomedical Technologies Design Application and Research Center, Menemen, Izmir, Turkiye
| | - S Akça-Özalp
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkiye
| | - M Ayvacikli
- Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu-Manisa, Turkiye
| | - O Madkhali
- Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia
| | - M Topaksu
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkiye
| | - N Can
- Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia.
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2
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Jain A, Seth P, Aggarwal S. Synthesis, characterization and thermoluminescence of MgO:Li,Tb,Sm phosphor for high dose gamma dosimetry applications. Appl Radiat Isot 2024; 206:111222. [PMID: 38346374 DOI: 10.1016/j.apradiso.2024.111222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 03/10/2024]
Abstract
A detailed TL investigation on MgO:Li,Tb,Sm phosphor has been carried out by studying several TL characteristics - TL glow curve structure, dose response, linearity dose behaviour, fading and reproducibility. TL glow curve structure of the phosphor reveals the presence of two TL glow peaks. The main TL glow peak of high intensity is observed at high temperature side i.e. at 162 °C and another peak of low intensity is observed at 316 °C. Further, the effect of dose on TL response of the phosphor has been studied and a new behaviour is noticed. With increasing doses, the position of main TL glow peak is similar while the second TL glow peak vanishes at higher doses. A linear TL response is observed from 10 Gy-700 Gy and becomes sublinear above 700 Gy. Low TL fading characteristics and good reproducibility have also been observed. Encouraging results suggest the applicability of doped MgO phosphor for the detection of gamma rays.
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Affiliation(s)
- Aayushi Jain
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Dwarka, Sec-16C, New Delhi, 10078, India
| | - Pooja Seth
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Dwarka, Sec-16C, New Delhi, 10078, India
| | - Shruti Aggarwal
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Dwarka, Sec-16C, New Delhi, 10078, India.
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Sadek AM, Farag MA, Abd El-Hafez AI, Kitis G. TL-SDA: A designed toolkit for the deconvolution analysis of thermoluminescence glow curves. Appl Radiat Isot 2024; 206:111202. [PMID: 38309118 DOI: 10.1016/j.apradiso.2024.111202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 02/05/2024]
Abstract
In the present study, a graphical user interface (GUI) toolkit has been developed to analyze the thermoluminescence (TL) glow-curve and evaluate the trapping parameters using TL expression based on the one-trap one-recombination model. The basic idea of the deconvolution analysis in the developed toolkit is based on performing a sequence of successful fits, where the information provided by each fit is used by the next fit until the deconvolution of the entire glow curve approaches an optimum solution. The starting values and ranges of the fitting parameters can be controlled and adjusted to improve the deconvolution analysis of complex structure glow curves. The designed toolkit is also supported by the background-subtraction option to improve the analysis at low irradiation dose levels. The expanded uncertainty at the 95 % confidence level of the fitted trapping parameters is also provided. All the evaluations performed using the designed toolkit are allowed to be extracted into an Excel spreadsheet. The TL-SDA toolkit can be freely downloaded from: TLSDA_v1 - File Exchange - MATLAB Central (https://www.mathworks.com/matlabcentral/fileexchange/154136-tlsda_v1-1).
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Affiliation(s)
- A M Sadek
- Ionizing Radiation Metrology Department, National Institute for Standards, Giza, Egypt.
| | - M A Farag
- Ionizing Radiation Metrology Department, National Institute for Standards, Giza, Egypt
| | - A I Abd El-Hafez
- Ionizing Radiation Metrology Department, National Institute for Standards, Giza, Egypt
| | - G Kitis
- Nuclear Physics and Elementary Particles Physics Section, Physics Department, Aristotle University of Thessaloniki, Greece
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Lahaie A, Assaillit G, Gaillardin M. Investigations on α-Al 2O 3 thermoluminescence for dosimetry of high energy photons. Appl Radiat Isot 2024; 206:111238. [PMID: 38364611 DOI: 10.1016/j.apradiso.2024.111238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/26/2024] [Accepted: 02/13/2024] [Indexed: 02/18/2024]
Abstract
This article presents a study of high-energy X-ray dosimetry carried out at CEA Gramat. In this study, we are interested in alumina as a new thermoluminescent dosimeter. We performed several pre-irradiation protocols to use alpha-alumina as a dosimeter over doses ranging from 0.09 Gy to 350/400 Gy in order to obtain calibration curve for these different protocols.
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Murugasen P, Dhavamurthy M, Anthoniammal P, Antony Suresh A, Mohapatra M. Structural, optical, and thermoluminescence characterizations of 1 mol% Dy 3+ion-activated Fluro Boro-phosphate glass for photonic devices. Spectrochim Acta A Mol Biomol Spectrosc 2024; 308:123757. [PMID: 38142490 DOI: 10.1016/j.saa.2023.123757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 10/12/2023] [Accepted: 12/08/2023] [Indexed: 12/26/2023]
Abstract
A novel Fluro boro-phosphate host matrix doped with the 1 mol% of Dy3+ ions (50B2O3 + 20P2O5 + 10TiO2 + 10SrCO3 + 4BaF2 + 5BaCO3 + 1Dy2O3) was prepared using a conventional melt-quenching mechanism, and its structural characteristics were explored through the Powder-XRD, FT-IR, FT-Raman, EDAX and SEM spectroscopic analysis. The XRD spectrum of the glass confirmed its non-crystalline or amorphous structure. FT-IR and FT-Raman spectrum studies revealed that various borate and phosphate groups present with a variety of stretching and bending vibrations. Scanning Electron Microscope (SEM) and Energy Dispersive X-ray analysis (EDAX) analysis have been used to examine the surface morphology and the presence of elements, respectively in the prepared glass. The optical absorption spectrum was used to explore the electronic band structure through the measurements of optical band-gap energy and Urbach energy. The luminescence spectrum reveals the emission characteristics of Dy3+ ions due to the electric-dipole and magnetic-dipole transitions. It is found that the decay time of the 4F9/2 excited level at a concentration of 1 mol% Dy3+ in the glass matrix is tri-fit non-exponential. The CIE chromaticity coordinates and the concentration influence on Y/B intensity ratios were computed for the creation of white light from the luminescence spectrum. The present work also discusses the findings after figuring out the correlated color temperature associated (CCT) with the color purity (Pe). The Thermoluminescence (TL) characteristics and the kinetic parameters of the glass were studied after the γ-irradiation with a dose of 2 kGy. EPR investigation revealed the paramagnetic characteristics through the hyperfine structure of Dy3+ ions and the electron-hole pair formation upon irradiation in the glass matrix.
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Affiliation(s)
- Priya Murugasen
- Department of Physics, Saveetha Engineering College, Thandalam, Chennai 602 105, India.
| | - M Dhavamurthy
- Department of Physics, Mannai Rajagopalaswamy Govt Arts College, Mannargudi 614001, India
| | - P Anthoniammal
- Department of Physics, Panimalar Engineering College, Chennai 600 123, India
| | - A Antony Suresh
- Department of Physics, Saveetha Engineering College, Thandalam, Chennai 602 105, India
| | - Manoj Mohapatra
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India & Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
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Ogundare FO, Mashaba M. On the thermoluminescence characteristics of NaF and KCl. Appl Radiat Isot 2024; 204:111127. [PMID: 38043247 DOI: 10.1016/j.apradiso.2023.111127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 11/07/2023] [Accepted: 11/24/2023] [Indexed: 12/05/2023]
Abstract
Thermoluminescence (TL) properties of NaF and KCl are investigated in order to assess their suitability as radiation dosemeters for retrospective dosimetry. TL measurements were made on samples irradiated to different doses (1-20 Gy) and heated at a rate ranging from 0.4 to 4 °C/s in a TL/OSL reader. The TL glow curves of NaF, readout at 1oCs-1, exhibited six apparent peaks around 38.7 ± 1.4, 63.5 ± 0.5, 105.5 ± 0.4, 237.5 ± 0.8, 299.0 ± 1.0 and 347.5 ± 0.7 °C with a shoulder around 168.0 ± 2.3 °C. Those of KCl have three clearly identifiable peaks around 44.0 ± 0.3, 95.3 ± 0.8 and 160.5 ± 0.7 °C. Glow curve deconvolution, however, revealed that the glow curves of NaF and KCl are best fitted with nine and five glow peaks respectively. In NaF, all the peaks exhibited linearity of dose-response in the entire dose range considered in this study. Only the peaks around 95.3 ± 0.8 and 160.5 ± 0.7 °C exhibited linear dose-response in the entire dose range for KCl. In NaF, there was thermal quenching of the TL responses of the peaks around 63.5 ± 0.5, 105.5 ± 0.4 and 237.5 ± 0.8 °C, and thermal enhancement of responses for peaks around 299.0 ± 1.0 and 347.5 ± 0.7 °C. With respect to KCl, the TL responses of all the peaks exhibited thermal enhancement as heating rate was increased. The activation energies associated with the thermal enhancement and quenching of the peaks' TL responses are presented. The repeated use of an aliquot of NaF five times for dose measurements resulted in an acceptable variation in sensitivity, on the other hand the sensitivity of KCl decreased with increasing number of repeat use. The activation energy of the electron traps associated with the glow peaks in both crystals calculated in this study are comparable to previously published values. Both crystals can be used for retrospective dosimetry however change in sensitivity with repeat use of an aliquot will have to be accounted for in the case of KCl.
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Affiliation(s)
- F O Ogundare
- Department of Physics, University of Botswana, Private Bag UB 0022, Gaborone, Botswana.
| | - M Mashaba
- Department of Physics, University of Botswana, Private Bag UB 0022, Gaborone, Botswana
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Tenopala JE, Roman-Lopez J, Lozano IB, Guzman-Castañeda JI, Diaz-Gongora JAI, Alarcón-Flores G. Synthesis, photo- and thermo-luminescent properties of Mg 2P 2O 7:Tm 3+ phosphors. Appl Radiat Isot 2024; 204:111148. [PMID: 38128301 DOI: 10.1016/j.apradiso.2023.111148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 11/06/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
In this work, both undoped and Thulium (Tm3+) doped (0.3-10 mol%) magnesium pyrophosphate (Mg2P2O7) powders were synthesized by the solvent evaporation method to study their photo-and thermoluminescent properties. Two crystalline phases were observed in the powders by X-Ray diffraction (XRD), the main phase being Mg2P2O7 and the second one thulium phosphate (TmPO4). The superficial morphology was analyzed by scanning electron microscopy (SEM), which revealed that the powders are agglomerates with an undefined form and grains with non-uniform size distribution. The photoluminescence (PL) emission spectra of Tm3+ doped powders show the 1D2 → 3F4 transition, associated with Tm3+ ions, at 452 and 458 nm. The thermoluminescence (TL) properties were analyzed in the undoped and Tm3+ doped powders exposed to 90Sr beta source. The TL glow curve of Tm3+ doped powders exhibits three maxima at about ⁓64-66 °C, ⁓198-202 °C, and ⁓301 °C. The TL dose-response is sub-linear from 0.11 to 0.54 Gy, linear between 0.79 and 24.95 Gy, and supra-linear from 34.99 to 599.95 Gy. Acceptable repeatability with a coefficient of variation of ∼1% was obtained after ten cycles of irradiation and readout. At 63 d of storage, the powders show fading of 30%, and at 1.6 years (585 d), the integrated TL intensity decays by 47%. The kinetic parameters of activation energy and frequency factor were evaluated using the Initial Rise, Booth, Bohun, and Porfianovitch (BBP) and Hoogenstraaten methods and Glow Curve Deconvolution with a general order kinetic model.
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Affiliation(s)
- J E Tenopala
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaria, 11500, Ciudad de México, Mexico
| | - J Roman-Lopez
- CONAHCyT- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, 04510, Ciudad de México, Mexico.
| | - I B Lozano
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaria, 11500, Ciudad de México, Mexico
| | - J I Guzman-Castañeda
- Instituto Politécnico Nacional, Escuela Superior de Ingeniería Química e Industrias Extractivas, Edificio 6, Unidad Profesional Adolfo López Mateos, 07738, Ciudad de México, Mexico
| | - J A I Diaz-Gongora
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaria, 11500, Ciudad de México, Mexico
| | - G Alarcón-Flores
- Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaria, 11500, Ciudad de México, Mexico
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Thakur M, Vij A, Singh F, Rangra VS. Spectroscopic studies of metastable tetragonal ZrO 2 nanocrystals. Spectrochim Acta A Mol Biomol Spectrosc 2024; 305:123495. [PMID: 37827001 DOI: 10.1016/j.saa.2023.123495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/14/2023]
Abstract
This study delves into an examination of the structural and luminescent properties of zirconium dioxide (ZrO2) synthesized via the solid-state combustion method. Nitrates are harnessed as the oxidizing agent, while glycine serves as the fuel. Two distinct compositions are explored: a stoichiometric 1:1 ratio and a fuel-enriched 1:2 ratio. The structural analysis, employing X-ray diffraction and Raman spectroscopy, predominantly manifests a tetragonal structural phase in both samples; however, a minor monoclinic phase has also been observed in the former sample. The band gap was found to be 4.50 eV and 4.28 eV for ZrO2 synthesized in stoichiometric ratio and a fuel-enriched ratio respectively. The samples also show defects assisted photoluminescence in both the samples. The thermoluminescence of samples were investigated after irradiating the samples with UV and gamma rays for different doses. The TL curves manifest a shift towards lower temperatures at higher doses. . Significantly, the sample prepared with a 1:1 nitrate-fuel ratio exhibits a more pronounced overall TL intensity. In conclusion, our findings imply that the formation of the tetragonal phase may be influenced by strain energy, rather than being solely ascribed to size effects and oxygen vacancies within the lattice.
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Affiliation(s)
- Maneshwar Thakur
- Department of Physics, Himachal Pradesh University, Shimla 171005, India
| | - Ankush Vij
- Department of Physics & Astrophysics, Central University Haryana, Mahendergarh 123031, India.
| | - Fouran Singh
- Materials Science Group, Inter- University Accelerator Centre, New Delhi 110067, India
| | - Vir Singh Rangra
- Department of Physics, Himachal Pradesh University, Shimla 171005, India.
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Alonso Sotolongo A, RIvera Montalvo T, Nolasco Altamirano D, López-Luke T, Contreras García ME, Zárate Medina J. Thermoluminescent glow curve of Gd 1-xRE xAlO 3 (RE=Dy or Pr) beta irradiated phosphors. Appl Radiat Isot 2023; 201:111019. [PMID: 37725890 DOI: 10.1016/j.apradiso.2023.111019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 08/15/2023] [Accepted: 09/05/2023] [Indexed: 09/21/2023]
Abstract
Phosphors composed of Gd1-xRExAlO3 (0≤x ≤ 5 RE = Dy or Pr) stoichiometries were synthesized using the reverse coprecipitation pathway. The thermoluminescent responses of all phosphors were studied under beta radiation exposure. Doping the gadolinium aluminate host improved the thermoluminescent response of the phosphors, with the phosphors composed of Gd0.99Dy0.01AlO3 and Gd0.95Pr0.05AlO3 being the most sensitive. The Dy3+ ions produced a higher improvement of the thermoluminescent signal than the Pr3+ ions. Additionally, a proportional relationship between the similarity of the atomic numbers of the dopant and replaced ions and the sensitivity to thermoluminescence was confirmed. Besides, a slight shift of the thermoluminescent peaks toward lower temperatures was detected for doped phosphors. In the repeatability tests applied to the phosphor composed of Gd0.99Dy0.01AlO3, an anomalous increase in sensitization was observed. The observed sensitization was associated with the formation of electron trap clusters resulting from the continuous exposure to beta radiation. Furthermore, another sensitization phenomenon was detected in the phosphor with Gd0.95Pr0.05AlO3 stoichiometry when it was heated at low temperatures. The aforementioned striking behavior was related to quasi-continuous distributions of electron traps and the tunneling effect. In regard to linearity, the phosphor composed of Gd0.99Dy0.01AlO3 exhibited a linear response with the dose across the entire range of beta doses. However, the response of the Gd0.95Pr0.05AlO3 phosphor lost linearity beyond 26.4 Gy of beta dose. The results obtained through the use of the Tmax-Tstop method and deconvolutions suggested an enhancement in the efficiency of the thermoluminescent mechanisms due to the incorporation of activators.
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Affiliation(s)
- Alejandro Alonso Sotolongo
- Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edif. "U", C.U., Morelia, 58060, Michoacan, Mexico.
| | - Teodoro RIvera Montalvo
- Instituto Politécnico Nacional, CICATA-Legaria, Legaria 694, Mexico City, 11500, Mexico City, Mexico.
| | - Daniel Nolasco Altamirano
- Instituto Politécnico Nacional, CICATA-Legaria, Legaria 694, Mexico City, 11500, Mexico City, Mexico.
| | - Tzarara López-Luke
- Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edif. "U", C.U., Morelia, 58060, Michoacan, Mexico.
| | - María Eugenia Contreras García
- Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edif. "U", C.U., Morelia, 58060, Michoacan, Mexico.
| | - Juan Zárate Medina
- Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edif. "U", C.U., Morelia, 58060, Michoacan, Mexico.
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Silva AMB, Jesus LS, Correa W, Junot DO, Caldas LVE, Dantas NO, Souza DN, Silva ACA. Luminescence characterization of BioGlass undoped and doped with europium and silver ions. Appl Radiat Isot 2023; 201:110997. [PMID: 37666051 DOI: 10.1016/j.apradiso.2023.110997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/27/2023] [Accepted: 08/22/2023] [Indexed: 09/06/2023]
Abstract
The objective of this study was to investigate the properties of BioGlass, with and without doping with europium and silver, with a specific focus on its potential application in thermoluminescent (TL) and optically stimulated luminescent (OSL) dosimetry. The structural and optical characteristics of the samples were also analyzed using techniques such as X-ray diffraction (XRD), optical absorption (OA), and fluorescence spectroscopy (FL). An XRD analysis confirmed the amorphous phase of the BioGlass. OA and FL spectra were obtained at room temperature, and characteristic bands of dopant ions were observed which confirmed the incorporation of the Eu3+ ions and silver nanoparticles Ag(NP) ion into the BioGlass. The OSL decay curves exhibited a characteristic exponential behavior, with a notable presence of fast and medium decay components; this suggests that the charge traps within the BioGlass samples possess a high photoionization cross section when exposed to blue LEDs, which are commonly used as the light source in OSL readers. Different TL glow peaks with varying shapes of the glow curve were observed when the dopant, the co-dopant, and the concentration of silver were altered in the samples. The TL kinetic parameters were determined, such as the order value, activation energy, and frequency factor, and the OSL parameters for the compound were also analyzed, including an exponential fit to the curves. Based on these initial results, we conclude that BioGlass has the potential for use in radiation dosimetry.
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Affiliation(s)
- Anderson M B Silva
- Departamento de Física, Universidade Federal de Sergipe, Marechal Rondon, S/N, 49.100-000, São Cristovão, SE, Brazil.
| | - Laís S Jesus
- Laboratório de Novos Materiais Nanoestruturados e Funcionais, Instituto de Física, Universidade Federal de Alagoas, 57072-900, Maceió, Alagoas, Brazil
| | - Wender Correa
- Laboratório de Novos Materiais Nanoestruturados e Funcionais, Instituto de Física, Universidade Federal de Alagoas, 57072-900, Maceió, Alagoas, Brazil
| | - Danilo O Junot
- Instituto de Física Armando Dias Tavares, Universidade do Estado do Rio de Janeiro UERJ, Rua São Francisco Xavier, 524, 20550-013, Rio de Janeiro, RJ, Brazil
| | - Linda V E Caldas
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242, 05508-000, São Paulo, SP, Brazil
| | - Noelio O Dantas
- Laboratório de Novos Materiais Nanoestruturados e Funcionais, Instituto de Física, Universidade Federal de Alagoas, 57072-900, Maceió, Alagoas, Brazil
| | - Divanizia N Souza
- Departamento de Física, Universidade Federal de Sergipe, Marechal Rondon, S/N, 49.100-000, São Cristovão, SE, Brazil
| | - Anielle C A Silva
- Laboratório de Novos Materiais Nanoestruturados e Funcionais, Instituto de Física, Universidade Federal de Alagoas, 57072-900, Maceió, Alagoas, Brazil
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Martínez-Baltezar R, Azorín-Nieto J, Martinez-Baltazar R, Cortés-Ortiz E. Thermoluminescent characteristics of UV-irradiated Aluminum nitride (AlN). Appl Radiat Isot 2023; 200:110977. [PMID: 37595322 DOI: 10.1016/j.apradiso.2023.110977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/26/2023] [Accepted: 08/08/2023] [Indexed: 08/20/2023]
Abstract
This paper presents results of studying the thermoluminescence (TL) properties of aluminum nitride (AlN) synthesized by chemical vapor deposition (CVD) method. Previously to study the TL properties, the phosphor was characterized by means of X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FT-IR), photoluminescence (PL), and electron microscopy (EDS-SEM). TL studies were performed after ultraviolet (UV) irradiation using the whole spectrum of the xenon (Xe) lamp. XRD results show that AlN has a hexagonal crystalline structure. EDS-SEM analysis revealed the presence of oxygen (O) and Carbon (C) impurities in the powders. FT-IR spectroscopy lets us discuss the distribution of these impurities in the crystalline structure. The sample with 9.54% of C and 7.36% of O exhibits a TL glow curve with a predominant peak around 450 K, and according to the deconvolution method was found that the glow curve is composed by six peaks each one centered at 383, 446, 478, 540, 587 and 637 K. The TL response as a function of dose fits a logarithmic increasing function along the dose range studied: These results suggest that AlN is a promising material for application as a TL dosimeter for UV radiation.
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Affiliation(s)
| | - Juan Azorín-Nieto
- Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, Mexico
| | | | - Emma Cortés-Ortiz
- Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, Mexico; Universidad Tecnológica de México-UNITEC MÉXICO-Campus Los Reyes, Mexico City, Mexico
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12
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Silva AMB, Rodrigues DS, Antonio PL, Junot DO, Caldas LVE, Souza DN. Investigation of dosimetric properties of CaSO 4:Mn phosphor prepared using slow evaporation route. Appl Radiat Isot 2023; 199:110874. [PMID: 37285758 DOI: 10.1016/j.apradiso.2023.110874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 04/03/2023] [Accepted: 05/24/2023] [Indexed: 06/09/2023]
Abstract
The objective of this work was to investigate the luminescent properties of CaSO4:Mn synthesized by slow evaporation route. The crystalline structure, morphology, thermal and optical properties of the phosphors were characterized by X-ray diffraction analysis (XRD), Scanning electron microscopy (SEM), photoluminescence (PL) and thermogravimetric analysis (TGA). Moreover, using thermoluminescence (TL) and optically stimulated luminescence (OSL) techniques, the dosimetric properties of the phosphors, such as emission spectra, glow curve reproducibility, dose-response linearity, fading of the luminescent signal, variation of the TL intensity with the heating rate, OSL decay curves, correlation between TL and OSL emissions and minimum detectable dose (MDD) were comprehensively investigated. For dosimetric analyses, the samples were irradiated with doses from 169 mGy to 10 Gy. The emission band fits with the characteristic line of the Mn2+ emission features, ascribed to 6A1→4T1 transition. CaSO4:Mn pellets present a TL glow curve with a single typical peak centered around 494 nm, an OSL decay curve with predominance of a fast decay component, and a MDD on the order of mGy. The luminescent signals showed to be linear and reproducible in the studied dose range. The trapping centers located between 0.83 eV and 1.07 eV were revealed for different heating rates in the TL study. The high TL sensitivity of CaSO4:Mn was proven when comparing with commercially available dosimeters. The luminescent signals exhibit a smaller fading than described in the literature for CaSO4:Mn produced by other methods.
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Affiliation(s)
- Anderson M B Silva
- Departamento de Física, Universidade Federal de Sergipe, Marechal Rondon, S/N, 49100-000, São Cristovão, SE, Brazil.
| | - Daniel S Rodrigues
- Departamento de Física, Universidade Federal de Sergipe, Marechal Rondon, S/N, 49100-000, São Cristovão, SE, Brazil
| | - Patrícia L Antonio
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Av. Prof. Lineu Preste, 2242, 05508-000, São Paulo, SP, Brazil
| | - Danilo O Junot
- Instituto de Física Armando Dias Tavares, Universidade do Estado do Rio de Janeiro UERJ, Rua São Francisco Xavier, 524, 20550-013, Rio de Janeiro, RJ, Brazil
| | - Linda V E Caldas
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Av. Prof. Lineu Preste, 2242, 05508-000, São Paulo, SP, Brazil
| | - Divanizia N Souza
- Departamento de Física, Universidade Federal de Sergipe, Marechal Rondon, S/N, 49100-000, São Cristovão, SE, Brazil
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Ugalde-Valdés MA, Nolasco-Altamirano D, López-Ruiz LE, Guzmán-Mendoza J, Rivera-Montalvo T. TL glow curve and kinetic analysis of Na 2SiO 3:Pr 3+ under beta radiation effect. Appl Radiat Isot 2023; 198:110850. [PMID: 37207370 DOI: 10.1016/j.apradiso.2023.110850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 05/21/2023]
Abstract
Ionizing radiation dosimetry with thermoluminescence (TL) materials based on silicon or glass can be interesting in its potential use in radiation monitoring as the solution to the constant looking of development of new radiation detectors. In this work, TL characteristics of sodium silicate exposed to beta radiation effects were studied. TL response beta irradiated exhibited a glow curve with two peaks centered at 398 K and 473 K. Samples showed linearity from 0.55 to 13.2 Gy. TL readings after 10 times showed a repeatability with an error of less than 1%. Remain information showed significant losses during the first 24 h, but its information was almost constant after 72 h of storage. The Tmax-Tstop method exhibited three peaks which were mathematically analyzed with a general order deconvolution finding kinetic orders close to the second order for the first peak, meanwhile the kinetic order for the second peak and third peak are close to second order. Finally, the VHR method showed anomalous TL glow curve behavior with an increasing intensity TL as the heating rate increased.
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Affiliation(s)
- M A Ugalde-Valdés
- Instituto Politécnico Nacional, Legaria 694, Col. Irrigación, 11500, Mexico City, Mexico.
| | - D Nolasco-Altamirano
- Instituto Politécnico Nacional, Legaria 694, Col. Irrigación, 11500, Mexico City, Mexico
| | - L E López-Ruiz
- Instituto Politécnico Nacional, Legaria 694, Col. Irrigación, 11500, Mexico City, Mexico
| | - J Guzmán-Mendoza
- Instituto Politécnico Nacional, Legaria 694, Col. Irrigación, 11500, Mexico City, Mexico
| | - T Rivera-Montalvo
- Instituto Politécnico Nacional, Legaria 694, Col. Irrigación, 11500, Mexico City, Mexico
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Alajlani Y, Sonsuz M, Barad A, Kaynar ÜH, Ayvacikli M, Topaksu M, Can N. Thermoluminescence in GdAl 3(BO 3) 4 phosphors: Unusual heating rate dependencies, dose responses and kinetic parameters. Appl Radiat Isot 2023; 198:110851. [PMID: 37182394 DOI: 10.1016/j.apradiso.2023.110851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/02/2023] [Accepted: 05/08/2023] [Indexed: 05/16/2023]
Abstract
The current study focuses on the production of GdAl3(BO3)4 (GAB) phosphors using gel combustion. X-ray diffraction (XRD) and thermoluminescent (TL) methods were used to investigate the structural and thermoluminescence (TL) features of the samples. XRD results revealed that GAB phosphors were crystallized in a rhombohedral crystal system. TL experimental data exhibited an unusual heating rate behaviour, which was explained by the semi-localized transition model, and this provides valuable insight into the properties of the GAB sample. Beta-irradiated GAB hosts exhibit two primary peaks at 106 °C and 277 °C on their TL glow curves. We have employed a variety of heating rates (VHRs), TM-Tstop method, and computerized glow curve deconvolution (CGCD) techniques. By using a combination of these techniques, we can identify the kinetic parameters of the GAB samples more accurately, including peak numbers, activation energy, and frequency factors. Both Tm-Tstop and CGCD techniques produce similar results in terms of trap numbers and trap depths. In the trap centers, electrons were trapped at 1.05 eV, 0.84 eV, 1.12 eV, 1.20 eV, 1.42 eV, 1.63 eV and 1.42 eV. There was a linear behaviour of GAB samples over a dose range of 0.1 Gy-10 Gy. GAB phosphors did not show any significant changes in TL response with repeated irradiation cycles, suggesting that it is a reliable radiation dosimeter. GAB is therefore a potential candidate for radiotherapy dose measurement based on these findings.
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Affiliation(s)
- Y Alajlani
- Department of Physics, College of Science, Jazan University, P.O. Box. 114, Jazan, 45142, Kingdom of Saudi Arabia
| | - M Sonsuz
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkiye
| | - A Barad
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkiye
| | - Ümit H Kaynar
- Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkiye
| | - M Ayvacikli
- Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu-Manisa, Turkiye
| | - M Topaksu
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkiye
| | - N Can
- Department of Physics, College of Science, Jazan University, P.O. Box. 114, Jazan, 45142, Kingdom of Saudi Arabia.
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Gadre SS, Singh B, Tripathi A, Malinen E, Pandey A. An investigation of luminescence properties of CaF 2: Dy nanophosphor irradiated with gamma rays and low energy proton beams. Appl Radiat Isot 2023; 197:110821. [PMID: 37146467 DOI: 10.1016/j.apradiso.2023.110821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 05/07/2023]
Abstract
This paper reports the luminescence properties of nanocrystalline calcium fluoride doped with dysprosium (CaF2: Dy). The nanophosphor has been synthesized by the chemical co-precipitation technique and the dopant concentration has been optimized at 0.3 mol% using thermoluminescence (TL) intensity emitted post 50Gy gamma dose irradiation of samples doped with different dopant concentrations. X-ray diffraction shows the formation of crystalline particles with an average size of 49.233 nm. Photoluminescence (PL) emission spectrum shows the characteristic peaks at 455 nm, 482 nm, 573 nm corresponding to 4I15/2 to 6H15/2, 4F9/2 to 6H15/2 and 4F9/2 to 6H13/2 Dy3+ transitions respectively. PL excitation spectrum shows a peak at 327 nm which corresponds to the Dy3+ transition of 6H15/2 to 4L19/2. Gamma (of 1.25 MeV) and low energy proton beam (of 30 keV) irradiated nanophosphor shows a variation in TL glow curve structure and peak position with an increase in radiation dose/fluence. However, the nanophosphor shows a wide linear dose response for 60Co gamma radiation in the range 10 Gy - 1.5 kGy and for low energy proton beam in the fluence range of 1012-1014 ions/cm2. Srim 2013 has been used to calculate the ion beam parameters including the range of protons in CaF2: Dy 0.3 mol%. The nanophosphor CaF2: Dy could be further investigated as a potential dosimeter for gamma rays and proton beam by studying its TL properties for different energies of these radiations.
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Affiliation(s)
- Sayali S Gadre
- Department of Physics & Astrophysics, University of Delhi, Delhi, 110007, India
| | - Birendra Singh
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Ambuj Tripathi
- Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Eirik Malinen
- Department of Physics, University of Oslo, Oslo, Norway
| | - Anant Pandey
- Department of Physics, Sri Venkateswara College, University of Delhi, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India.
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Boussac A, Sellés J, Sugiura M. Energetics and proton release in photosystem II from Thermosynechococcus elongatus with a D1 protein encoded by either the psbA 2 or psbA 3 gene. Biochim Biophys Acta Bioenerg 2023; 1864:148979. [PMID: 37080330 DOI: 10.1016/j.bbabio.2023.148979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/05/2023] [Accepted: 04/12/2023] [Indexed: 04/22/2023]
Abstract
In the cyanobacterium Thermosynechococcus elongatus, there are three psbA genes coding for the Photosystem II (PSII) D1 subunit that interacts with most of the main cofactors involved in the electron transfers. Recently, the 3D crystal structures of both PsbA2-PSII and PsbA3-PSII have been solved [Nakajima et al., J. Biol. Chem. 298 (2022) 102668.]. It was proposed that the loss of one hydrogen bond of PheD1 due to the D1-Y147F exchange in PsbA2-PSII resulted in a more negative Em of PheD1 in PsbA2-PSII when compared to PsbA3-PSII. In addition, the loss of two water molecules in the Cl-1 channel was attributed to the D1-P173M substitution in PsbA2-PSII. This exchange, by narrowing the Cl-1 proton channel, could be at the origin of a slowing down of the proton release. Here, we have continued the characterization of PsbA2-PSII by measuring the thermoluminescence from the S2QA-/DCMU charge recombination and by measuring proton release kinetics using time-resolved absorption changes of the dye bromocresol purple. It was found that i) the Em of PheD1-•/PheD1 was decreased by ~30 mV in PsbA2-PSII when compared to PsbA3-PSII and ii) the kinetics of the proton release into the bulk was significantly slowed down in PsbA2-PSII in the S2TyrZ• to S3TyrZ and S3TyrZ• → (S3TyrZ•)' transitions. This slowing down was partially reversed by the PsbA2/M173P mutation and induced by the PsbA3/P173M mutation thus confirming a role of the D1-173 residue in the egress of protons trough the Cl-1 channel.
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Affiliation(s)
- Alain Boussac
- I2BC, UMR CNRS 9198, CEA Saclay, 91191 Gif-sur-Yvette, France.
| | - Julien Sellés
- Institut de Biologie Physico-Chimique, UMR CNRS 7141 and Sorbonne Université, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Miwa Sugiura
- Proteo-Science Research Center, and Department of Chemistry, Graduate School of Science and Technology, Ehime University, Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
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Thakur M, Vij A, Kumar A, Koo BH, Singh F, Rangra VS. Electronic structure and defects induced luminescence study of phase stabilized t-ZrO 2 nanocrystals. LUMINESCENCE 2023. [PMID: 37056200 DOI: 10.1002/bio.4505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 04/02/2023] [Accepted: 04/10/2023] [Indexed: 04/15/2023]
Abstract
Luminescent tetragonal-ZrO2 nanocrystals were synthesized using an optimized combustion method without post-synthesis annealing and characterized using X-ray diffraction, electron microscopy, Raman, X-ray photoelectron spectroscopy, UV-Visible, photoluminescence spectroscopy, thermoluminescence and vibrating sample magnetometry. The as synthesized t-ZrO2 nanocrystals have a band gap of 4.65 eV and exhibit defect assisted blue emission (CIE coordinates 0.2294,0.1984) when excited with 270 nm. The defect states were qualitatively and quantitatively analyzed using thermoluminescence (TL) after irradiating nanocrystals with gamma and UV radiation at various doses. The TL glow curves show intense emission in the high temperature region from 523-673 K for both UV and gamma irradiated samples; however, another less intense TL peak was also observed in the low temperature region from 333-453 K with gamma irradiation at higher doses, indicating the formation of shallow trapping states. The activation energies, frequency factor and order of kinetics were estimated through the computerized glow curve deconvolution method for the shallow and deep traps for γ and UV- irradiated samples. The present study shows that phase stabilized t-ZrO2 nanocrystals are potential candidates for luminescence-based applications.
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Affiliation(s)
- Maneshwar Thakur
- Department of Physics, Himachal Pradesh University, Shimla, India
| | - Ankush Vij
- Department of Physics, University of Petroleum and Energy Studies (UPES) Dehradun, India
- Department of Physics & Astrophysics, Central University Haryana, Mahendergarh, India
| | - Akshay Kumar
- Department of Material Science and Engineering, Changwon National University, Changwon, Gyeongnam, Republic of Korea
| | - Bon Heun Koo
- Department of Material Science and Engineering, Changwon National University, Changwon, Gyeongnam, Republic of Korea
- Department of Materials Convergence and System Engineering, Changwon National University, Changwon, Gyeongnam, Republic of Korea
| | - Fouran Singh
- Materials Science Group, Inter- University Accelerator Centre, New Delhi, India
| | - Vir Singh Rangra
- Department of Physics, Himachal Pradesh University, Shimla, India
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Diana P, Saravanakumar S, Sivaganesh D, Sivakumar V, Li Y, Sebastian S, Kim JM, Kannan PK, Sangeetha L, Praneeth VKK. Zinc Silicate Phosphor: Insights of X-Ray Induced and Temperature Enabled Luminescence. LUMINESCENCE 2023; 38:625-636. [PMID: 36929164 DOI: 10.1002/bio.4488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/19/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023]
Abstract
The present investigation deals with the effect of calcination temperature on the structural and thermoluminescent (TL) properties of Zn2 SiO4 materials. For this study, Zn2 SiO4 was prepared via a simple hydrothermal route and calcinated at temperatures from 700 °C to 1100 °C in an air atmosphere. TL data of all Zn2 SiO4 samples showed two peaks around 239 °C and 330 °C due to the formation of the luminescence centre during X-ray irradiation. More interestingly, the Zn2 SiO4 sample calcinated at 900 °C exhibited a shift in the TL peak (282 °C and 354 °C) with an optimal TL intensity which is attributed due to its good crystallinity with a well-defined hexagonal plate-like morphology. X-ray irradiated Zn2 SiO4 samples calcinated at 900 °C exhibited a high-temperature TL glow curve peak suggesting that the present material could be used for high-temperature dosimetry applications.
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Affiliation(s)
- P Diana
- Department of Physics, Kalasalingam Academy of Research and Education, Krishnan Koil, Tamil Nadu, India
| | - Subramanian Saravanakumar
- Department of Physics, Kalasalingam Academy of Research and Education, Krishnan Koil, Tamil Nadu, India
| | - D Sivaganesh
- Department of Physics, Kalasalingam Academy of Research and Education, Krishnan Koil, Tamil Nadu, India.,Ural Federal University, Mira str, Yekaterinburg, Russia
| | - V Sivakumar
- Department of Physics, M. Kumarasamy College of Engineering, Karur, Tamil Nadu, India
| | - Yang Li
- School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - S Sebastian
- Department of Physics, Arul Anandar College, Karumathur, Madurai, Tamil Nadu, India
| | - Ji-Man Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, The Republic of Korea
| | | | - L Sangeetha
- Department of Physics, Saveetha Engineering College, Chennai, Tamil Nadu, India
| | - Vijayendran K K Praneeth
- Department of Chemistry, Kalasalingam Academy of Research and Education, Krishnan Koil, Tamil Nadu, India
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Khandaker MU, Nawi SNM, Lam SE, Sani SFA, Islam MA, Islam MA, Naseer KA, Osman H, Bradley DA. Thermoluminescent characterization and defect studies of graphite-rich media under high dose neutron exposure. Appl Radiat Isot 2023; 196:110771. [PMID: 36933313 DOI: 10.1016/j.apradiso.2023.110771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/11/2023]
Abstract
Thermoluminescence (TL) materials have a broad variety of uses in various fields, such as clinical research, individual dosimetry, and environmental dosimetry, amongst others. However, the use of individual neutron dosimetry has been developing more aggressively lately. In this regard, present study establishes a relationship between the neutron dosage and the optical property changes of graphite-rich materials caused by high doses of neutron radiation. This has been done with the intention of developing a novel, graphite-based radiation dosimeter. Herein, the TL yield of commercially graphite-rich materials (i.e. graphite sheet, 2B and HB grade pencils) irradiated by neutron radiation with doses ranging from 250 Gy to 1500 Gy has been investigated. The samples were bombarded with thermal neutrons as well as a negligible amount of gamma rays, from the nuclear reactor TRIGA-II installed at the Bangladesh Atomic Energy Commission. The shape of the glow curves was observed to be independent of the given dosage, with the predominant TL dosimetric peak maintained within the region of 163 °C-168 °C for each sample. By studying the glow curves of the irradiated samples, some of the most well theoretical models and techniques were used to compute the kinetic parameters such as the order of kinetics (b), activation energy (E) or trap depth, frequency factor (s) or escape probability, and trap lifetime (τ). All of the samples were found to have a good linear response over the whole dosage range, with 2B grade of polymer pencil lead graphite (PPLGs) demonstrating a higher level of sensitivity than both HB grade and graphite sheet (GS) samples. Additionally, the level of sensitivity shown by each of them is highest at the lowest dosage that was given, and it decreases as the dose increases. Importantly, the phenomenon of dose-dependent structural modifications and internal annealing of defects has been observed by assessing the area of deconvoluted micro-Raman spectra of graphite-rich materials in high-frequency areas. This trend is consistent with the cyclical pattern reported in the intensity ratio of defect and graphite modes in previously investigated carbon-rich media. Such recurrent occurrences suggest the idea of employing Raman microspectroscopy as a radiation damage study tool for carbonaceous materials. The excellent responses of the key TL properties of the 2B grade pencil demonstrate its usefulness as a passive radiation dosimeter. As a consequence, the findings suggest that graphite-rich materials have the potential to be useful as a low-cost passive radiation dosimeter, with applications in radiotherapy and manufacturing.
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Affiliation(s)
- Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIURd, Dhaka, 1341, Bangladesh; MEU Research Unit, Middle East University, Airport Rd., 11831, Amman, Jordan.
| | - S N Mat Nawi
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of Medical Sciences, School of Medical and Life Science, 47500, Bandar Sunway, Selangor, Malaysia
| | - S E Lam
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia
| | - S F Abdul Sani
- Department of Physics, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mohammad Amirul Islam
- Institute of Nuclear Science & Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Ganakbari, Ashulia, Dhaka, 1349, Bangladesh
| | - M A Islam
- Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - K A Naseer
- Department of Physics, Farook College (Autonomous), Kozhikode, 673632, India
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 2425, Taif, 21944, Saudi Arabia
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
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Calheiro DS, Meira-Belo LC. Effect of Re-sintering on the morphological and thermoluminescence properties of the ALOX-520 detector. Appl Radiat Isot 2023; 192:110580. [PMID: 36462301 DOI: 10.1016/j.apradiso.2022.110580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/27/2022]
Abstract
Significant research is being conducted on new materials suitable for dosimetry in recent decades with particular focus on their luminescent properties. For instance, a new ceramic detector, aluminum oxide 520 (ALOX-520), was developed at CDTN in 2011 using the sol-gel method. The detectors were doped with C, Fe, Mg, Ca, Cr, Ni, and Mo impurities that generated the necessary dosimetric trap levels to enhance the luminescence effects. Consequently, the resultant material was appropriate for the quantification of ionizing radiation fields by both thermally and optically stimulated luminescence techniques. Originally, ALOX 520 was sintered at 2023 K under a highly reducing atmosphere. At the end of this process, it exhibited important dosimetric properties, as already described in existing literature. The objective of this study is to conduct tests at higher temperatures in vacuum to investigate the effect of thermal treatments under these conditions on the structural and dosimetric properties of the material. Accordingly, ALOX-520 was re-sintered at high temperatures and the changes in its physical, morphological, and dosimetric properties were analyzed. ALOX 520T exhibited better dosimetric properties in terms of homogeneity, reproducibility, linearity, and signal fading. Physically, an increase in the detection threshold value of ALOX-520T could be linked to a decrease in the sensitivity of this detector. The energy dependence, the thermal quenching correction, and kinetic studies for ALOX-520T conducted as part of this work are original. However, the obtained results are consistent with those reported in the literature for α-Al2O3 ceramic detectors. XRD and XRF analyses demonstrated that the thermal treatment did not change the crystalline structure or composition of the material. All the results indicate that an appropriate thermal treatment could improve the dosimetric properties of the ALOX-520 detector without causing significant changes in its crystalline structure.
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Affiliation(s)
- D S Calheiro
- Nuclear Technology Development Center, CDTN, 31270-901, Belo Horizonte, MG, Brazil
| | - L C Meira-Belo
- Nuclear Technology Development Center, CDTN, 31270-901, Belo Horizonte, MG, Brazil.
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21
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Toktamış H, Hatib M, Kılıç Hİ, Çanakçı H. Thermoluminescence studies of calcite conducted by bacterial CaCO 3 precipitation in organic soil. Appl Radiat Isot 2022; 190:110462. [PMID: 36174334 DOI: 10.1016/j.apradiso.2022.110462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/11/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022]
Abstract
In this study, the thermoluminescence (TL) properties of the calcite conducted by bacterial calcium carbonate (CaCO3) precipitation (BCCP) in organic soils were investigated. The bacterial calcium carbonate (CaCO3) precipitation (BCCP) is a popular technique and has been applied in a variety of civil and geotechnical engineering applications. For example, bacterial calcium carbonate precipitation fills the gaps on the organic ground and makes cementing it with the biological method using bacteria. The study reveals that the calcium carbonate mineral called as calcite has a clear TL glow curve with four main peaks located around 90, 140, 210 and 240 °C, a wide linear dose response region between 140Gy and 2.3 kGy is observed. In addition, a good reusability is seen in the high temperature peaks. The TL glow curve peaks are not affected by reusability. Although the dosimetric peaks at 210 and 240 °C appear to be nearly constant, the TL peak intensities at 90 °C and 140 °C completely faded after 24 and 336 h storage time, respectively. The activation energies (Ea) and frequency factors (s) for peaks at 90 °C, 140 °C, 210 °C and 240 °C were evaluated via variable heating rate (VHR). The activation energy of the peaks in the TL glow curve is lying between 0.57eV and 1.04 eV.
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Affiliation(s)
- Hüseyin Toktamış
- University of Gaziantep, Department of Engineering Physics, Gaziantep, Turkey.
| | - Muhammed Hatib
- University of Gaziantep, Department of Engineering Physics, Gaziantep, Turkey
| | - H İbrahim Kılıç
- University of Gaziantep, Department of Biology, Gaziantep, Turkey
| | - Hanifi Çanakçı
- Hasan Kalyoncu University, Department of Civil Engineering, Gaziantep, Turkey
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22
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Ismail SS, Sani SFA, Khandaker MU, Tamchek N, Karim JA, Almugren KS, Alkallas FH, Shafiqah ASS, Bradley DA. Dosimetric characteristics of Gd-doped silica glass subjected to neutron and gamma irradiations. Appl Radiat Isot 2022; 189:110409. [PMID: 36037726 DOI: 10.1016/j.apradiso.2022.110409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 08/01/2022] [Accepted: 08/04/2022] [Indexed: 11/19/2022]
Abstract
The dosimetric characteristics of newly developed gadolinium (Gd) glass dosimeter produced via sol-gel method are reported. Irradiation were made using a 750 kW neutron flux thermal power and 1.25 MeV 60Co gamma rays with entrance doses from 2 to 10 Gy. Investigation has been done on various Gd dopant concentrations, ranging from 1 to 10 mol%. The Gd-doped silica glass have been characterised for thermoluminescence (TL) dose response, sensitivity, linearity index, glow curve and kinetic parameter analysis. For particular dopant concentration obtained in 6 mol% Gd, the least squares fit shows the change in TL yield, correlation coefficient (r2) of better than 0.980 (at 95% confidence level), with neutron and gamma exposure to be 8 and 4 times greater than that of 1 mol% Gd, respectively. Broad peaks in the absence of any sharp peak observed in the glow curve confirms the amorphous nature of the prepared glass. A glow curve of Gd-doped SiO2 sample is observed with a single prominent peak (Tm) within 200-250 °C (peak shifting appears with respect to the increment of dopant concentration) and 350 °C (for all respective Gd dopants) for neutron and gamma irradiations, respectively. Deconvolution shows the glow curves of the Gd-doped SiO2 glass to be formed of seven and five overlapping peaks, with figures of merit below 2% (FOM) of between 1.38-1.79 and 1.30-1.97 for the particular neutron and gamma irradiations, respectively. Through use of Glowfit deconvolution software, the key trapping parameters of activation energy, E and frequency factor, s-1 were calculated for the Gd-doped SiO2 glass. The mechanism of TL yield with the gradual increase in Gd concentrations and doses is explained upon the incorporation of Gd and radiation damage that change the structure of the electron traps in the glass matrix. These early results indicate that selectively screened Gd-SiO2 glass can be developed into a promising TL system towards dosimetric applications.
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Affiliation(s)
- S S Ismail
- Centre for Applied Physics and Radiation Technologies, School of Medical and Life Science, 47500, Bandar Sunway, Selangor, Malaysia.
| | - S F Abdul Sani
- Department of Physics, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - M U Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Medical and Life Science, 47500, Bandar Sunway, Selangor, Malaysia; Department of General Educational Deveopment, Faculty of science and Information Technology, Daffodil International University, DIU Rd, Dhaka 1341, Bangladesh
| | - N Tamchek
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Julia A Karim
- Nuclear and Reactor Physics Section, Nuclear Technology Center, Technical Support Division, Malaysian Nuclear Agency, Kajang, Malaysia
| | - K S Almugren
- Department of Physics, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - F H Alkallas
- Department of Physics, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - A S Siti Shafiqah
- Dept of Physics, Kuliyyah of Science, International Islamic University Malaysia, 25200, Kuantan, Malaysia
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, School of Medical and Life Science, 47500, Bandar Sunway, Selangor, Malaysia; Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
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23
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Ahmad K, Kakakhel MB, Hayat S, Wazir-Ud-Din M, Mahmood MM, Ur-Rehman S, Siddique MT, Munir M, Mirza SM. Dosimetric properties of thermoluminescent NaCl pellets from Khewra Salt Mines, Pakistan. LUMINESCENCE 2022; 37:1701-1709. [PMID: 35864081 DOI: 10.1002/bio.4345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 11/10/2022]
Abstract
Thermoluminescence (TL) and extended dosimetric characteristics of naturally occurring NaCl salt were studied. Pellets were prepared from mined crystalline salt obtained from Khewra salt mines, Pakistan and irradiated from 1 mGy to 10,000 mGy using Co-60 gamma source. The TL response showed two dominant peaks around 125 °C and 230 °C respectively at low doses, with an additional peak in between at doses beyond 300 mGy. A linear and supra-linear TL response was observed between 1 mGy-100 mGy and 100 mGy-10 Gy dose ranges respectively. During first 24 hours post irradiation, the TL intensity dropped by 20%. A maximum angular dependence of up to 50% was observed between 0 to 360°. For photon energies between 33 keV-1.25 MeV significant energy dependence was observed for photons <100 keV only. Sample sensitivity increased with dose a qualitatively similar behaviour to TLD-200. Zeff of the sample (14.6) was comparable to TLD-200 (16.3). No significant dose rate effects (deviation for a Co-60 source within 3.5%) on the TL sensitivity of the sample were found. The lowest detectable dose limit (LDDL) for salt sample was found to be 0.8 mGy whereas the sample reproducibility test showed a maximum of ±11% deviation from the first value.
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Affiliation(s)
- Khalil Ahmad
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan.,Health Physics Division, Pakistan Institute of Nuclear Sciences and Technology (PINSTECH), Islamabad, Pakistan
| | - M Basim Kakakhel
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
| | - Sikander Hayat
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
| | - M Wazir-Ud-Din
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
| | - M Masood Mahmood
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan.,Health Physics Division, Pakistan Institute of Nuclear Sciences and Technology (PINSTECH), Islamabad, Pakistan
| | - Shakeel Ur-Rehman
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
| | - M Tariq Siddique
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
| | - Muhammad Munir
- Health Physics Division, Pakistan Institute of Nuclear Sciences and Technology (PINSTECH), Islamabad, Pakistan
| | - Sikander M Mirza
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, Pakistan
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24
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Mahmood MM, Kakakhel MB, Wazir-Ud-Din M, Hayat S, Ahmad K, Ur-Rehman S, Siddique MT, Masood A, Ul-Haq A, Mirza SM. Thermoluminescence (TL), kinetic parameters and dosimetric features of Pakistani limestone. Appl Radiat Isot 2022; 188:110357. [PMID: 35820299 DOI: 10.1016/j.apradiso.2022.110357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 11/02/2022]
Abstract
Thermoluminescence (TL), kinetic parameters and dosimetric features of Pakistani limestone (CaCO3) is reported in this study. Both compositional and structural analyses reveal that the material has a crystalline nature with rhombohedral structure and non-uniform crystallite size having major content of CaCO3. A powdered limestone sample of 30 mg is found to be the optimized weight for TL and other dosimetric studies. After irradiating the samples with a test dose of 100 Gy using a β source three composite glow peaks termed as P1, P2 and P3 are visible at 100, 230 and 330 °C respectively using a linear heating rate of 1 °C/s during the TL readout. The Coefficient of Variation (COV) is found to be about 4%. Kinetic parameters (i.e., frequency factor (f), activation energy (E), and the kinetic order (b)) are estimated using both first and second Order of kinetics using an in-house Computerized Glow Curve Deconvolution (GCD) software. The figure-of-merit (FOM) is found to be 2.12%. The distribution of continuum traps with activation energy in the range of 0.77-2.59 eV is observed in the kinetic parameter analysis of the glow peaks of the sample. The TL response in the dose range of 1-5 Gy (not reported previously) and linearity in the dose response in the dose range of 1-10 Gy is observed in samples of Pakistani limestone. The Minimum Detectable Dose (MDD) is 1.01 Gy clearly resembling the experimentally linear fitted results. After a fading study for a period of thirty days, only the first peak i.e., P1 majorly fades while no major change is observed in the amplitude of peaks P2 and P3. In addition, P1 is the main contributor fading by 92% within the first 24 h of irradiation while P2 fades by 30 %. However, P3 shows stability with a very minor fading of 0.05% within 24 h of irradiation. This study concludes that Pakistani limestone can be further assessed as a potential radiation dosimeter for various applications.
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Affiliation(s)
- M Masood Mahmood
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan; Heath Physics Division, PINSTECH, Nilore, Islamabad, Pakistan
| | - M Basim Kakakhel
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan.
| | - M Wazir-Ud-Din
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - Sikander Hayat
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - Khalil Ahmad
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - Shakeel Ur-Rehman
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - M Tariq Siddique
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - Atif Masood
- Department of Medical Physics, KIRAN Hospital, Karachi, Pakistan
| | - Asadar Ul-Haq
- Department of Medical Physics, KIRAN Hospital, Karachi, Pakistan
| | - Sikander M Mirza
- Department of Physics & Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
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25
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Isik E. Thermoluminescence Characteristic of Calcite with Gaussian Process Regression Model of Machine Learning. LUMINESCENCE 2022; 37:1321-1327. [PMID: 35641843 DOI: 10.1002/bio.4298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/20/2022] [Accepted: 05/27/2022] [Indexed: 11/07/2022]
Abstract
Thermoluminescence (TL) is defined as a luminescent phenomenon that can be detected when an insulator or semiconductor is thermally stimulated. Defective crystals store radiation until they are stimulated. Thermoluminescence is a method of monitoring the absorbed dose of dosimeters. The irradiation crystal is heated to 500 °C to display the absorbed dose as a luminescent light. The thermoluminescence dosimetric properties of calcite obtained from nature were investigated in this study. Machine learning (ML) was also examined utilizing Gaussian process regression (GPR) for stimulated TL characteristics. According to the experimental output, the TL glow curve has two main peaks located at 90 o C and 240 o C with good dosimetric properties. In the four regression models of GPR, the data of heating rate of 3 o C/sec has the lowest residual.
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Affiliation(s)
- Esme Isik
- Department of Optician, Malatya Turgut Özal University, Malatya, Turkey
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26
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Prabhu NS, Sharmila K, Karunakara N, Almousa N, Sayyed MI, Kamath SD. Thermoluminescence Dosimetric Attributes of Yb 3+ Doped BaO-ZnO-LiF-B 2 O 3 Glass Material After Er 3+ Co-doping. LUMINESCENCE 2022; 37:828-836. [PMID: 35293139 DOI: 10.1002/bio.4227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 02/05/2022] [Accepted: 03/10/2022] [Indexed: 11/05/2022]
Abstract
Motivated by our previous study on Sm3+ ions as thermoluminescence (TL) sensitizers to the BaO-ZnO-LiF-B2 O3 -Yb2 O3 glass system, in current study we examine the effect of Er3+ ion co-doping on the TL characteristics of this glass system. The 4f-4f electronic transitions of the Er3+ and Yb3+ ions were confirmed via the optical absorption spectrum. Notably, the use of Yb3+ -Er3+ ions failed to improve the TL intensity, sensitivity, and trap density. However, they enabled the glass system to function as an activator-quencher system. The linearity range and effective atomic number remained unaffected after co-doping. In addition, the problem of anomalous fading caused a remnant signal of just 58% after a week of storage of the Yb3+ mono-doped glass. This was resolved by the optimum co-doping of Er3+ ions to achieve an 89% signal. The co-doping of Er3+ ions to the BaO-ZnO-LiF-B2 O3 -Yb2 O3 glass system regulated its thermal stability and therefore supplemented its potential for radiation monitoring in food processing and retrospective dosimetry.
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Affiliation(s)
- Nimitha S Prabhu
- Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - K Sharmila
- Centre for Application of Radioisotopes and Radiation Technology (CARRT), Mangalore University, Mangalagangothri, Karnataka, India
| | - N Karunakara
- Centre for Application of Radioisotopes and Radiation Technology (CARRT), Mangalore University, Mangalagangothri, Karnataka, India.,Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Mangalagangothri Karnataka, India
| | - Nouf Almousa
- Department of Physics, College of Science, princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.,Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, USA
| | - M I Sayyed
- Department of Physics, Faculty of Science, Isra University, Amman, Jordan.,Department of Nuclear Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman bin Faisal University (IAU), Dammam, Saudi Arabia
| | - Sudha D Kamath
- Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India
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27
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Kumar J, Kumar S, Shekhar C, Brajpuriya R, Vij A. Effect of Eu doping on the thermoulminescence of UV and gamma irradiated Mg 2 B 2 O 5 nanophosphors. LUMINESCENCE 2022; 37:472-478. [PMID: 35032091 DOI: 10.1002/bio.4197] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 12/06/2021] [Accepted: 01/07/2022] [Indexed: 11/09/2022]
Abstract
This paper presents the effect of Eu doping on the thermoluminescence (TL) of ultraviolet (UV-254 nm) and gamma irradiated triclinic Mg2 B2 O5 nanophosphors. The diffuse reflectance predicts slight decrease in band gap from 5.18 to 4.99 eV with increasing Eu (1,3 and 5%) content in Mg2 B2 O5 . The TL glow curves of UV irradiated samples comprised of a main peak around 500 K with weak intensity peak/shoulders in low temperature region. Interestingly Eu(3%) doped Mg2 B2 O5 shows maximum TL intensity with suppression of low temperature shoulder peaks and almost linear UV dose dependent TL response. However in case of gamma irradiated Eu (1,3 % doped) samples, TL glow curve comprises of a main peak around 425-445 K and closely lying peak around 500-515 K with relatively lesser intensity. In case of Eu (5%) doped samples, TL peak around 508 K starts dominating over peak around 425 K. TL of both UV and gamma irradiated samples showed the presence of various deep and shallow defect states within the bandgap of materials having different kinetic parameters, which were determined using TLanal software based on Kiti's general order equation. The present study shows that Eu doped Mg2 B2 O5 nanophosphors can be tuned for UV and gamma dosimetry.
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Affiliation(s)
- Jitender Kumar
- Nanophosphors Lab, Department of Physics, Amity University Haryana, Gurgaon, India
| | - Shalendra Kumar
- Department of Physics, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Chander Shekhar
- Nanophosphors Lab, Department of Physics, Amity University Haryana, Gurgaon, India
| | - Ranjeet Brajpuriya
- Department of Physics, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Ankush Vij
- Department of Physics, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
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28
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Souadi G, Akca-Ozalp S, Ekdal Karali E, Kaynar UH, Ayvacikli M, Topaksu M, Can N. Synthesis and beta particle excited thermoluminescence of BaSiF 6 phosphor. Appl Radiat Isot 2021; 181:110075. [PMID: 34953319 DOI: 10.1016/j.apradiso.2021.110075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/10/2021] [Accepted: 12/17/2021] [Indexed: 11/28/2022]
Abstract
BaSiF6 phosphor was synthesized by a gel combustion method. The crystalline size was found to be 54.17 ± 4.36 nm using Williamson-Hall (W-H) approximation. The TL data collected by means of a combination of a commercial BG39 and HC575/25 filters was studied to evaluate basic kinetic parameters. Three TL glow peaks of BaSiF6 phosphors are centered at around 84, 190 and 322 °C. Tm-Tstop, various heating rate (VHR) and computerized glow-curve deconvolution (CGCD) method were utilized to analyse collected data. Our findings indicate that luminescence process in scrutinized material may obey second order kinetics. The TL dose response of the TL glow peaks exhibits a linear characteristic up to 100 Gy. Deconvolution of the glow curve reveals that the number of the component TL glow peaks in the complex glow curve is composed of well-isolated six overlapping glow peaks. The FOM value is 2.32.
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Affiliation(s)
- G Souadi
- Jazan University, Physics Department, P.O. Box 114, 45142, Jazan, Saudi Arabia
| | - S Akca-Ozalp
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkey
| | - E Ekdal Karali
- Ege University, Institute of Nuclear Sciences, 35100, Bornova, İzmir, Turkey.
| | - U H Kaynar
- Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkey
| | - M Ayvacikli
- Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu, Manisa, Turkey
| | - M Topaksu
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkey
| | - N Can
- Jazan University, Physics Department, P.O. Box 114, 45142, Jazan, Saudi Arabia; Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye, Manisa, 45010, Turkey
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29
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Wen X, Yang Z, Ding S, Yang H, Zhang L, Lu C, Lu Q. Analysis of the changes of electron transfer and heterogeneity of photosystem II in Deg1-reduced Arabidopsis plants. Photosynth Res 2021; 150:159-177. [PMID: 33993381 DOI: 10.1007/s11120-021-00842-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 05/04/2021] [Indexed: 05/07/2023]
Abstract
Deg1 protease functions in protease and chaperone of PSII complex components, but few works were performed to study the effects of Deg1 on electron transport activities on the donor and acceptor side of PSII and its correlation with the photoprotection of PSII during photoinhibition. Therefore, we performed systematic and comprehensive investigations of electron transfers on the donor and acceptor sides of photosystem II (PSII) in the Deg1-reduced transgenic lines deg1-2 and deg1-4. Both the maximal quantum efficiency of PSII photochemistry (Fv/Fm) and the actual PSII efficiency (ΦPSII) decreased significantly in the transgenic plants. Increases in nonphotochemical quenching (NPQ) and the dissipated energy flux per reaction center (DI0/RC) were also shown in the transgenic plants. Along with the decreased D1, CP47, and CP43 content, these results suggested photoinhibition under growth light conditions in transgenic plants. Decreased Deg1 caused inhibition of electron transfer on the PSII reducing side, leading to a decline in the number of QB-reducing centers and accumulation of QB-nonreducing centers. The Tm of the Q band shifted from 5.7 °C in the wild-type plant to 10.4 °C and 14.2 °C in the deg1-2 and deg1-4 plants, respectively, indicating an increase in the stability of S2QA¯ in transgenic plants. PSIIα in the transgenic plants largely reduced, while PSIIβ and PSIIγ increased with the decline in the Deg1 levels in transgenic plants suggesting PSIIα centers gradually converted into PSIIβ and PSIIγ centers in the transgenic plants. Besides, the connectivity of PSIIα and PSIIβ was downregulated in transgenic plants. Our results reveal that downregulation of Deg1 protein levels induced photoinhibition in transgenic plants, leading to loss of PSII activities on both the donor and acceptor sides in transgenic plants. These results give a new insight into the regulation role of Deg1 in PSII electron transport.
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Affiliation(s)
- Xiaogang Wen
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100093, China
| | - Zhipan Yang
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Shunhua Ding
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Huixia Yang
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Lixin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng, 475001, China
| | - Congming Lu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, China.
| | - Qingtao Lu
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
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30
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Amarlou A, Mohammadi K, Banaee N, Nedaei HA. Synthesis and evaluation of thermoluminescence properties of ZrO 2:Mg for radiotherapy dosimetry. Radiat Environ Biophys 2021; 60:647-652. [PMID: 34347178 DOI: 10.1007/s00411-021-00928-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 07/24/2021] [Indexed: 06/13/2023]
Abstract
This study aimed to investigate the thermoluminescent properties of ZrO2:Mg irradiated with a 6 MV X-ray beam and its potential application in radiotherapy dosimetry. ZrO2 powder was synthesized using the sol-gel method and Mg was used as a dopant. Irradiations were performed with ZrO2:Mg chips located at the center of a 10 × 10 cm2 radiation field at a source surface distance of 100 cm, below a stack of solid water slabs, at the depth of maximum absorbed dose. The investigated characteristics of the material included linearity with radiation dose, reproducibility, accuracy, sensitivity and fading. Regarding the intrinsic difference of the samples, the glow curves of the investigated ZrO2:Mg chips exposed to 1 Gy of 6 MV X-rays exhibited three or four peaks. The ZrO2:Mg samples showed a 47% fading at 24 h after irradiation, and the reproducibility of the thermoluminescence reading of ZrO2:Mg for equal irradiation conditions was ± 21%. The thermoluminescence response of the investigated ZrO2:Mg samples to various absorbed doses from 0.5 to 2.5 Gy showed a gentle increase of the thermoluminescence intensity with increasing absorbed dose. The obtained results show that ZrO2:Mg is not an appropriate candidate for X-ray photons in radiotherapy, due to low thermoluminescence peak temperature, low reproducibility, low sensitivity to various absorbed doses and significant fading.
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Affiliation(s)
- Asieh Amarlou
- Department of Medical Physics & Biomedical Engineering, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Nooshin Banaee
- Medical Radiation Research Center, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Hassan Ali Nedaei
- Department of Medical Physics & Biomedical Engineering, Tehran University of Medical Sciences, Tehran, Iran.
- Radiation Oncology Research Center, Cancer Institute, Tehran University of Medical Sciences, Tehran, Iran.
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31
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Pérez-Cruz L, Cruz-Zaragoza E, Díaz D, Alcántara JMH, García EC, Camarillo-García I, Sánchez HM. Synthesis, optical and thermoluminescence properties of thulium-doped KMgF 3 fluoroperovskite. Appl Radiat Isot 2021; 177:109913. [PMID: 34450415 DOI: 10.1016/j.apradiso.2021.109913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 11/19/2022]
Abstract
KMgF3 fluoroperovskite doped with thulium at different concentrations were synthesized by the solid-state reaction method. The phase composition and the thermal stability up to 600 °C of the polycrystals were analyzed by X-ray diffraction and thermogravimetric analysis, respectively. The KMgF3 at 1.0 mol% of Tm polycrystals showed the best thermal stability and did not present another phase. The gamma radiation (0.1-10 kGy) effect in thulium-doped KMgF3 produced the F color centers, and their aggregates such as F2, and F3 centers. The F centers, and the potassium vacancies (VK-) in the fluoroperosvkites were analyzed by the optical absorption and emission measurements. Optical absorption at 275 nm and 443 nm were assigned to F and F2, respectively, in undoped KMgF3. Tm-doped fluoroperovskite shows the optical absorption bands at 277, 393, 432, and 577 nm, which were ascribed to the F, F3, F2 and VK- centers, respectively. When the F band for undoped polycrystals was excited at 275 nm, a clear emission associated with F2 and F3 centers was observed. In the case of Tm-doped, an enhancement of the blue emission at 457 nm occurred and a UV band (354 nm) was observed upon exciting the F band. The blue emission of thulium was overlapped with the F3 color center band. The emission bands at 457 and 354 nm were ascribed to 1D2 - 3F4 and 1D2 - 3H6 transitions of Tm in KMgF3. The optical absorption and glow curves were investigated too. The glow curves were assisted by the color centers, vacancies, and thulium impurity. Thermal bleaching shows that the F center was the main participant to give rise to the TL intensity of the glow curves. Thulium acts as a deep electron trap in the bandgap of the KMgF3 fluoroperovskites forming TL peak at the higher temperature, from 430 to 408 °C. The absorption, emission, and thermoluminescence glow peaks of the undoped and Tm-doped KMgF3 were compared.
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Affiliation(s)
- L Pérez-Cruz
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, 04510, Ciudad de México, Mexico
| | - E Cruz-Zaragoza
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, 04510, Ciudad de México, Mexico.
| | - D Díaz
- Facultad de Química, Universidad Nacional Autónoma de México, 04510, Ciudad de México, Mexico
| | - J M Hernández Alcántara
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad Universitaria, A.P. 20364, 04510, Ciudad de México, Mexico
| | - E Camarillo García
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad Universitaria, A.P. 20364, 04510, Ciudad de México, Mexico
| | - I Camarillo-García
- División de Ciencias Básicas e Ingeniería UAM-Iztapalapa, San Rafael Atlixco, 09340, Ciudad de México, Mexico
| | - H Murrieta Sánchez
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad Universitaria, A.P. 20364, 04510, Ciudad de México, Mexico
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Castillo-García LJ, Bernal R, Huerta-Rivera CA, Orante-Barrón VR, Mendoza-Córdova A, Cruz-Vázquez C. Beta radiation excited thermoluminescence of SrB 4O 7 phosphors synthesized through solid state reaction. Appl Radiat Isot 2021; 176:109887. [PMID: 34418725 DOI: 10.1016/j.apradiso.2021.109887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/02/2021] [Accepted: 07/12/2021] [Indexed: 11/24/2022]
Abstract
In this work, the synthesis of SrB4O7 through solid state reaction and its beta particle excited thermoluminescence (TL) are reported. The glow curves show maxima around 200 and 300 -considered suitable for TL dosimetry-, and a remarkable reproducibility in successive irradiation - TL readout cycles. The integrated TL exhibits a linear dependence upon the irradiation dose in the tested dose range (from 1.0 up to 8.0 Gy). The lower detection limit and the sensitivity relative to the TLD-100 dosimeter are 88 mGy and 0.49, respectively. From the results here presented, we conclude that SrB4O7 synthesized through solid state reaction can be considered a phosphor material interesting to develop TL dosimeters.
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Kumar J, Kumar R, Singh M, Kumar S, Kumar R, Won SO, Brajpuriya R, Dwivedi S, Sharma RK, Vij A. Structural, diffuse reflectance and luminescence study of t-Mg 2B 2O 5 nanostructures. Appl Phys A Mater Sci Process 2021; 127:617. [PMID: 34316098 PMCID: PMC8299454 DOI: 10.1007/s00339-021-04761-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
We report here the structural, reflectance, photoluminescence and thermoluminescence study of t-Mg2B2O5 nanostructures synthesized using optimized combustion method relatively at much lower temperature. The rietveld refinement of X-ray diffraction data confirms single-phase triclinic crystal structure of Mg2B2O5 nanoparticles. The direct band gap determined using diffuse reflectance spectra (DRS) was 5.23 eV, which is contrary to earlier reports quoting Mg2B2O5 as indirect band gap material. To elucidate the nature of band gap in Mg2B2O5, we performed first principle calculations based on full potential linearized augmented plane-wave (FPLAPW) method, predicting the direct band gap of 5.10 eV in t-Mg2B2O5 which is in good agreement with our experimental results. The t-Mg2B2O5 nanoparticles were found to exhibit yellow-reddish photoluminescence peaking at 588 nm, attributed to various defects states. The combustion synthesized Mg2B2O5 nanocrystals exhibited ultraviolet (254 nm) responsive thermoluminescence (TL). TL glow curve of Mg2B2O5 comprises of one dominant peak around 417-428 K and less intense shoulder around 573-589 K which arouse possibility of various trapping sites or defects present in the sample. The TL analysis using general order Kitti's equations was performed to estimate the activation energies of trapping states. Owing to already well-known mechanical and thermal properties, the direct wide band gap nature and UV responsive thermoluminescence of combustion synthesized t-Mg2B2O5 nanostructures can pave way for its use in luminescence-based applications and UV dosimetry. As an additional application of Mg2B2O5, anti-biofilms activity of Mg2B2O5 nanoparticles using pseudomonas aeruginosa bacterial cells was also performed which revealed 91 ± 2.7% inhibition of biofilms formed by P. aeruginosa, respectively, at 100 μg/ml after 24 h of treatment.
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Affiliation(s)
- Jitender Kumar
- Nanophosphors Lab, Department of Physics, Amity University Haryana, Gurgaon, 122413 India
| | - Rajesh Kumar
- Department of Physics, Delhi Technological University, Delhi, 110042 India
| | - Mukhtiyar Singh
- Department of Physics, Delhi Technological University, Delhi, 110042 India
| | - Shalendra Kumar
- Department of Physics, College of Science, King Faisal University, Hofuf, Al-Ahsa, 31982 Saudi Arabia
- Department of Physics, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007 India
| | - Ravi Kumar
- Centre for Material Science and Engineering, National Institute of Technology, Hamirpur, Himachal Pradesh 177005 India
| | - Sung Ok Won
- Advance Analysis Centre, Korea Institute of Science and Technology, Seoul, 136119 South Korea
| | - Ranjeet Brajpuriya
- Department of Physics, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007 India
| | - Sourabh Dwivedi
- Nanobiotechnology Lab, Aligarh Muslim University, Aligarh, 202002 India
| | - Ram K. Sharma
- Centre For Interdisciplinary Sciences, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007 India
| | - Ankush Vij
- Department of Physics, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007 India
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Nazeri AAZA, Sani SFA, Ung NM, Almugren KS, Alkallas FH, Bradley DA. Borosilicate glass 60Co high dose rate brachytherapy thermoluminescence dosimetry. Appl Radiat Isot 2021; 176:109814. [PMID: 34175543 DOI: 10.1016/j.apradiso.2021.109814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 11/24/2022]
Abstract
Brachytherapy is commonly used in treatment of cervical, prostate, breast and skin cancers, also for oral cancers, typically via the application of sealed radioactive sources that are inserted within or alongside the area to be treated. A particular aim of the various brachytherapy techniques is to accurately transfer to the targeted tumour the largest possible dose, at the same time minimizing dose to the surrounding normal tissue, including organs at risk. The dose fall-off with distance from the sources is steep, the dose gradient representing a prime factor in determining the dose distribution, also representing a challenge to the conduct of measurements around sources. Amorphous borosilicate glass (B2O3) in the form of microscope cover slips is recognized to offer a practicable system for such thermoluminescence dosimetry (TLD), providing for high-spatial resolution (down to < 1 mm), wide dynamic dose range, good reproducibility and reusability, minimal fading, resistance to water and low cost. Herein, investigation is made of the proposed dosimeter using a 1.25 MeV High Dose Rate (HDR) 60Co brachytherapy source, characterizing dose response, sensitivity, linearity index and fading. Analysis of the TL glow curves were obtained using the Tmax-Tstop method and first-order kinetics using GlowFit software, detailing the frequency factors and activation energy.
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González PR, Ávila O, Escobar-Alarcón L, Mendoza-Anaya D. Luminescence and kinetics parameters of high sensitivity MgB 4O 7 phosphor co-doped with Tm and Dy. Appl Radiat Isot 2021; 175:109811. [PMID: 34144340 DOI: 10.1016/j.apradiso.2021.109811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 11/25/2022]
Abstract
This work reports the luminescence and kinetics parameters of high sensitivity MgB4O7 phosphor co-doped with Tm and Dy ions (MgB4O7:Tm,Dy) obtained by the solution combustion technique. With the obtained material, sintered dosimeters in form of discs were made and subjected to 1223 K for 3 h and exposed to gamma radiation from a60Co source. It was found that these dosimeters show a sensitivity approximately 10 times higher than that shown by the commercial dosimeter TLD-100 (LiF:Mg,Ti). The kinetic parameters from three samples with different concentration of dopants were determined using the initial rise, peak shape and deconvolution methods. Initial rise and peak shape methods showed lower values than those found by the deconvolution method for the main peak (Peak 1). MgB4O7:Tm, Dy shows a wide linearity interval of TL response with respect to gamma dose and low coefficient of variability (1.5%). These results suggest that this new high sensitivity phosphor could be a promising material to be used in clinical dosimetry.
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Affiliation(s)
- P R González
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, La Marquesa, Ocoyoacac, Estado de México, C.P. 52750, Mexico.
| | - O Ávila
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, La Marquesa, Ocoyoacac, Estado de México, C.P. 52750, Mexico
| | - L Escobar-Alarcón
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, La Marquesa, Ocoyoacac, Estado de México, C.P. 52750, Mexico
| | - D Mendoza-Anaya
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, La Marquesa, Ocoyoacac, Estado de México, C.P. 52750, Mexico
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Khandaker MU, Mat Nawi SN, Bradley DA, Lam SE, Abdul Sani SF, Sulieman A. Studies of thermoluminescence kinetic parameters of polymer pencil lead graphite under photon exposures. Appl Radiat Isot 2021; 174:109757. [PMID: 33990033 DOI: 10.1016/j.apradiso.2021.109757] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/23/2021] [Accepted: 04/24/2021] [Indexed: 10/21/2022]
Abstract
This study analysed thermoluminescence (TL) glow curves of the polymer pencil lead graphite (PPLG) due to its potential applications in radiation dosimetry. The TL glow curves provide information on the physical parameters of the defects participating in luminescence process. The glow curves for different diameters PPLG samples were obtained with varying temperature from 50 to 300 °C, at a fixed heating rate of 10 °Cs-1. A number of methods (initial rise, peak shape and curve fitting) were used to fit the TL glow peaks of the PPLG samples obtained under photon dose of 200 Gy. From the fitted TL signals, the trap parameters such as the order of kinetics, the activation energy, the frequency factor, etc. for the individual peaks were numerically determined. The lifetimes of TL process were calculated assuming the first-order kinetics. The results are compared among the different methods adopted in this study. Implications about the possible results in glow curve deconvolution are discussed.
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Affiliation(s)
- Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia.
| | - Siti Nurasiah Mat Nawi
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia
| | - David Andrew Bradley
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia; Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
| | - Siok Ee Lam
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia
| | | | - Abdelmoneim Sulieman
- Department of Radiology and Medical Imaging, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, P.O. Box 422, Alkharj, 11942, Saudi Arabia
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Ahmad K, Kakakhel MB, Hayat S, Wazir-Ud-Din M, Mahmood MM, Ur Rehman S, Siddique MT, Mirza SM. Thermoluminescence study of pellets prepared using NaCl from Khewra Salt Mines in Pakistan. Radiat Environ Biophys 2021; 60:365-375. [PMID: 33611608 DOI: 10.1007/s00411-021-00894-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
In this study, the thermoluminescence characteristics of naturally occurring salt (NaCl) were assessed for the development of a radiation dosimeter. For this purpose, mined crystalline samples of salt were procured directly from Khewra salt mines in Pakistan. The samples were hand crushed, sieved, and compressed to pellets comparable in size to standard TLD chips, and irradiated to gamma radiation doses in the range of 5 mGy and 5000 mGy. Thermoluminescence (TL) response showed three main peaks in the glow curve around 115-130 °C, 150-170 °C, and 220-240 °C. A linear TL response was observed for the dose range of 5-100 mGy. The TL response became supra-linear for the dose ranges of 100-1000 mGy and 1000-5000 mGy. The Tm-Tstop method was applied to identify the overlapping peaks of the glow curve. Computerized glow curve deconvolution (CGCD) was then employed for the characterization of electron trap parameters such as frequency factor (s), activation energy (E), and the kinetic order (b), using General Order (GO) kinetics. The figure-of-merit (FOM) was found to be 1.08%, 0.94%, 0.77%, and 0.75%, at 500 mGy, 1 Gy, 2 Gy, and 5 Gy, respectively. The TL intensity faded by 20% within the first 24 h after irradiation and finally stabilized after two weeks. In addition, structural, morphological, and elemental analyses, were also performed using various analytical techniques. X-ray diffraction (XRD) showed that the salt crystallizes in a face-centered cubic structure. Scanning electron microscope (SEM) micrographs indicated that the crystallites are closely packed and cubic-shaped with non-uniform size, and mostly found in the agglomerated form. Similarly, the elemental analysis confirmed the presence of impurities such as Mg, Sr, S, K, O, and Ca, in the samples. The present study concludes that the pellets made from salt samples from Khewra mines have a potential for use as radiation dosimeters.
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Affiliation(s)
- Khalil Ahmad
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - M Basim Kakakhel
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan.
| | - Sikander Hayat
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - M Wazir-Ud-Din
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - M Masood Mahmood
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - Shakeel Ur Rehman
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - M Tariq Siddique
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
| | - Sikander M Mirza
- Department of Physics & Applied Mathematics, Institute of Engineering and Applied Sciences (PIEAS), Islamabad, 45650, Pakistan
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Depci T, Oglakci M, Sezer S, Yücel A, Dogan T, Souadi G, Topaksu M, Can N. Characterization of thermoluminescence kinetic parameters of beta irradiated B doped Ca 5(PO 4) 3OH powder obtained from eggshell. Appl Radiat Isot 2021; 173:109738. [PMID: 33910130 DOI: 10.1016/j.apradiso.2021.109738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/16/2021] [Accepted: 04/18/2021] [Indexed: 11/24/2022]
Abstract
In this study, we have synthesized B doped Ca5(PO4)3OH (HAP) by a sonication chemical method. The thermoluminescence (TL) properties of the family of synthesized samples (B doped Ca5(PO4)3OH (HAP) were investigated using an IRSL-TL 565 nm filter. This gave the highest TL intensity of each phosphor after 2 Gy β-irradiation. Three TL glow peaks of B doped Ca5(PO4)3OH (HAP) are centered at around 84, 208 and 324 °C (with a heating rate of 2 °Cs-1). The trapping parameters such as activation energy (E), order of kinetics (b), frequency factor (s) were calculated by using initial rise (IR), various heating rates (VHR) and computerized glow curve deconvolution (CGCD) method. The response of TL glow curves remained constant within ±5% deviation from the initial value after 9 cycles of reuse; but only at tenth cycle the deviation goes up to 6%.
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Affiliation(s)
- T Depci
- The Graduate School of Engineering & Sciences, Iskenderun Technical University, Iskenderun, Hatay, Turkey
| | - M Oglakci
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkey
| | - S Sezer
- Faculty of Arts and Science, Department of Chemistry, Inonu University, Malatya, Turkey
| | - A Yücel
- Faculty of Engineering, Department of Mining Engineering, Inonu University, Malatya, Turkey
| | - T Dogan
- Cukurova University, Vocational School of Imamoglu, Department of Computer Technologies, 01700, Adana, Turkey
| | - G Souadi
- Physics Department, Jazan University, P.O. Box 114, 45142, Jazan, Saudi Arabia
| | - M Topaksu
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkey
| | - N Can
- Physics Department, Jazan University, P.O. Box 114, 45142, Jazan, Saudi Arabia; Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye-Manisa, 45010, Turkey.
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Vichaidid T, Danworaphong S. Dating the historical old city walls of Songkhla Thailand using thermoluminescence technique. Heliyon 2021; 7:e06166. [PMID: 33665408 PMCID: PMC7907221 DOI: 10.1016/j.heliyon.2021.e06166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/24/2020] [Accepted: 01/28/2021] [Indexed: 12/01/2022] Open
Abstract
The Old Historical Wall, located in Bo Yang, Songkhla Province, Thailand, is an archaeological icon believed to have been constructed during the reign of Rama III, as indicated in the royal archives, around 1837–1840 CE. However, the recorded age is the result of unofficial documentation. The establishment was based on speculation from circumstantial evidence and local stories. The wall is made of bricks that underwent a heating process before being used for the construction. We therefore propose the use of the thermoluminescence technique for dating the wall. The samples include brick rubble from three excavation sites next to the wall. To determine the age, we estimate the radiation dose rate and the accumulated dose for each sample. The dose rate of the sample is determined using gamma spectroscopy with a high-purity germanium detector. For the accumulated dose, we employ the additive dose method using Co-60 with a dose range of 0–100 Gy. Glow curves are then deconvoluted using the general-order kinetics model. The results yield three superposition glow peaks at three different temperature ranges. Plateau tests are also carried out to find a proper temperature for dating purposes. Comparing the plateau test and the result of deconvolution, we find that the glow curve temperature suitable for dating was within 200–310 °C. The accumulated doses are then evaluated using the area under the curve of the peak temperature. The date is then determined as the ratio between the accumulated dose and the dose rate. The results indicate that the age is approximately 174–192 years, so that the wall was built around 1827–1841 CE, with one standard deviation interval. The duration is in agreement with the recorded age of the wall inscribed in the country's historical archives.
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Affiliation(s)
- Tidarut Vichaidid
- Division of Physics, Faculty of Science and Technology, Prince of Songkla University, Pattani, 94000, Thailand
| | - Sorasak Danworaphong
- Division of Physics, School of Science, Walailak University, Nakhon Si Thammarat, 80160, Thailand
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Benavente JF, Gómez-Ros JM, Correcher V. A kinetic model for the thermoluminescent high dose response of LiF:Mg,Cu,P (MCP-N). Appl Radiat Isot 2021; 170:109634. [PMID: 33578130 DOI: 10.1016/j.apradiso.2021.109634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/30/2020] [Accepted: 01/29/2021] [Indexed: 11/26/2022]
Abstract
This contribution describes a kinetic model attempting to reproduce the response of the thermoluminescent material LiF:Mg,Cu,P when it is irradiated to absorbed dose values in the kGy range. The modelling is based on the hypothesis of a relationship between the irradiation time (i.e. the absorbed dose) and the density of trapping/recombination centres. X-ray diffraction and thermal X-ray diffraction measurements have been performed to investigate the potential radiation and thermal damage on the structure of the material, including the possibility of partial phases. The proposed kinetic model qualitatively reproduces the observed changes in the TL glow curve for temperatures above the main peak as well as the two observed regions of absorbed dose response: linear and sub-linear.
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Affiliation(s)
| | | | - V Correcher
- CIEMAT, Av. Complutense 40, E-28040, Madrid, Spain
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Jakathamani S, Annalakshmi O, Jose MT, Mathiyarasu R, Venkatraman B. Ceramic based electronic component as retrospective radiation dosimeter. Appl Radiat Isot 2021; 170:109618. [PMID: 33550090 DOI: 10.1016/j.apradiso.2021.109618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/22/2020] [Accepted: 01/21/2021] [Indexed: 11/21/2022]
Abstract
Surface mount electronic devices (like resistors, capacitors, and inductors) extracted from the portable electronic devices (mobile phones, USB drives, etc.) have been studied for dose reconstruction using luminescence techniques for radiological or nuclear emergencies. In this work, carbon coated ceramic resistors removed from the electronic instruments are analyzed using thermo luminescence (TL) technique for the retrospective dose reconstruction. TL measurements on beta irradiated ceramic resistors exhibited one major dosimetric peak at around 540 K in addition to three other low temperature peaks. A linear beta dose response has been observed from 1 Gy to 125 Gy with Minimum Detectable Dose (MDD) of 0.1 Gy. The dose response is found to be supralinear below 1 Gy. The fading studies have been carried out and investigated up to 30 days. The important kinetic parameters for the material like TL trap depth, frequency factor and order of kinetics are evaluated by deconvolution method.
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Peng J, Kitis G, Sadek AM, Karsu Asal EC, Li Z. Thermoluminescence glow-curve deconvolution using analytical expressions: A unified presentation. Appl Radiat Isot 2021; 168:109440. [PMID: 33268224 DOI: 10.1016/j.apradiso.2020.109440] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/19/2020] [Accepted: 09/21/2020] [Indexed: 11/23/2022]
Abstract
This study provides a unified presentation of thermoluminescence (TL) glow-curve deconvolution within the framework of the open source R package "tgcd", according to various analytical expressions that describe first-, second-, general-, and mixed-order kinetics as well as the recently developed semi-analytical expressions that derive from the one trap-one recombination center (OTOR) model that utilizes the Lambert W function or the Wright Omega function. We provide a comprehensive, flexible, convenient, and openly accessible program to analyze TL glow curves according to different models and expressions. The consistency of kinetic parameters determined using different model expressions was assessed using measured TL glow curve of CaF2:Dy. The performance of the computerized glow curve deconvolution (CGCD) method was also tested using simulated glow curves. Results revealed the benefits of comparing kinetic parameters determined from different model expressions and those obtained using experimental TL evaluation methods to assess the reliability of deconvolution results. The accuracy of the CGCD method is dependent upon both the model expressions used and the intrinsic trapping parameters of the TL material.
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Kalmatskaya OA, Trubitsin BV, Suslichenko IS, Karavaev VA, Tikhonov AN. Electron transport in Tradescantia leaves acclimated to high and low light: thermoluminescence, PAM-fluorometry, and EPR studies. Photosynth Res 2020; 146:123-141. [PMID: 32594291 DOI: 10.1007/s11120-020-00767-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
Using thermoluminescence, PAM-fluorometry, and electron paramagnetic resonance (EPR) for assaying electron transport processes in chloroplasts in situ, we have compared photosynthetic characteristics in Tradescantia fluminensis leaves grown under low light (LL, 50-125 µmol photons m-2 s-1) or high light (HL, 875-1000 µmol photons m-2 s-1) condition. We found differences in the thermoluminescence (TL) spectra of LL- and HL-acclimated leaves. The LL and HL leaves show different proportions of the Q (~ 0 °C) and B (~ 25-30 °C) bands in their TL spectra; the ratios of the "light sums" of the Q and B bands being SQ/SB ≈ 1/1 (LL) and SQ/SB ≈ 1/3 (HL). This suggests the existence of different redox states of electron carriers on the acceptor side of PSII in LL and HL leaves, which may be affected, in particular, by different capacities of their photo-reducible PQ pools. Enhanced content of PQ in chloroplasts of LL leaves may be the reason for an efficient performance of photosynthesis at low irradiance. Kinetic studies of slow induction of Chl a fluorescence and measurements of P700 photooxidation by EPR demonstrate that HL leaves have faster (about 2 times) response to switching on actinic light as compared to LL leaves grown at moderate irradiation. HL leaves also show higher non-photochemical quenching (NPQ) of Chl a fluorescence. These properties of HL leaves (faster response to light and generation of enhanced NPQ) reflect the flexibility of their photosynthetic apparatus, providing sustainability and rapid response to fluctuations of environmental light intensity and solar stress resistance. Analysis of time-courses of the EPR signals of [Formula: see text] induced by far-red (λmax = 707 nm), exciting predominantly PSI, and white light, exciting both PSI and PSII, suggests that there is a contribution of cyclic electron flow around PSI to electron flow through PSI in HL leaves. The data obtained are discussed in terms of photosynthetic apparatus sustainability of HL and LL leaves under variable irradiation conditions.
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Affiliation(s)
| | - Boris V Trubitsin
- Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Igor S Suslichenko
- Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow, Russia
| | | | - Alexander N Tikhonov
- Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow, Russia.
- N.M. Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, Moscow, Russia.
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Huerta-Rivera CA, Bernal R, Cruz-Vázquez C, Castillo-García LJ, Cortez-Galaz C, Mendoza-Córdova A. Beta particle excited thermoluminescence of CaZrO 3 phosphors synthesized by solid state reaction. Appl Radiat Isot 2020; 168:109519. [PMID: 33239196 DOI: 10.1016/j.apradiso.2020.109519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/27/2020] [Accepted: 11/13/2020] [Indexed: 11/15/2022]
Abstract
In this work, the synthesis through solid state reaction and the thermoluminescence (TL) characterization of pellet shaped CaZrO3 samples is reported. X-ray diffraction confirms that orthorhombic CaZrO3 was obtained. The glow curve has two maxima located at 149 and 216 °C as well as a less intense maximum around 350 °C when a 5.0 °C/s heating rate is used after 64 Gy of beta particle exposure. A remarkably reproducibility of the TL response is observed in repeated irradiation - TL readouts cycles. The TL as a function of the dose displays linear dependence in the dose range from 0.5 to 256 Gy. The intensity of the maximum located around 216 °C remains 61% 14 days after irradiation, and then remains closely constant for longer times. The synthesized CaZrO3 exhibits TL properties potentially of interest for use in radiation detection and dosimetry.
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Affiliation(s)
- C A Huerta-Rivera
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora. Apartado Postal 130, Hermosillo, Sonora, 83000, Mexico
| | - R Bernal
- Departamento de Investigación en Física, Universidad de Sonora. Apartado Postal 5-088, Hermosillo, Sonora, 83190, Mexico.
| | - C Cruz-Vázquez
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora. Apartado Postal 130, Hermosillo, Sonora, 83000, Mexico
| | - L J Castillo-García
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora. Apartado Postal 130, Hermosillo, Sonora, 83000, Mexico
| | - C Cortez-Galaz
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora. Apartado Postal 130, Hermosillo, Sonora, 83000, Mexico
| | - A Mendoza-Córdova
- Departamento de Geología, Universidad de Sonora. Apartado Postal 847, Hermosillo, Sonora, 83000, Mexico
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Mandlik NT, Sahare PD, Kulkarni MS, Rawat NS, Gaikwad NP, Dhole SD. Study of optically stimulated luminescence and calculation of trapping parameters of K 2Ca 2(SO 4) 3:Eu nanophosphor. Appl Radiat Isot 2020; 167:109388. [PMID: 33011514 DOI: 10.1016/j.apradiso.2020.109388] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 12/01/2022]
Abstract
K2Ca2(SO4)3:Eu nanophosphor was synthesized by chemical coprecipitation method and annealed at different temperatures from 400 to 900 °C. The nanophosphor annealed at 600 °C showed cubic structure with crystallite size ~25 nm. TEM shows morphology of K2Ca2(SO4)3:Eu nanophosphor was in the form of nanorods having diameter ~20 nm and length of ~100-200 nm. These samples were irradiated with gamma radiation for the doses varying from 10 mGy to 10 kGy and their Thermoluminescence (TL) and continuous-wave optically stimulated luminescence (CW-OSL) have been studied. CW-OSL response was found to be maximal for the sample annealed at 600 °C. The TL glow curve of the nanophosphor apparently showed a major peak at around 160 °C accompanied by three low intensity peaks at ~75, 215 and 285 °C. The traps responsible for all the TL peaks in K2Ca2(SO4)3:Eu were also found to be OSL sensitive. The qualitative correlation between TL peaks and CW-OSL response suggested that the traps associated with low temperature peaks are responsible for fast decay and the traps associated with the higher temperature peaks are responsible for slow decay of the OSL signal. OSL response showed linear behavior up to 1 kGy and saturated with further increase in the gamma dose. The wide OSL response makes studied K2Ca2(SO4)3:Eu nanophosphor a good candidate for high dose measurement.
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Affiliation(s)
- Nandkumar T Mandlik
- Department of Physics, Fergusson College, Savitribai Phule Pune University, Pune, 411004, Maharashtra, India.
| | - P D Sahare
- Department of Physics and Astrophysics, University of Delhi, Delhi, 110007, India.
| | - M S Kulkarni
- Health Physics Division, BARC, Mumbai, 400085, Maharashtra, India
| | - N S Rawat
- Radiological Physics and Advisory Division, BARC, Mumbai, 400 085, Maharashtra, India
| | - N P Gaikwad
- Radiological Physics and Advisory Division, BARC, Mumbai, 400 085, Maharashtra, India
| | - S D Dhole
- Department of Physics, Savitribai Phule Pune University, Pune, 411007, Maharashtra, India
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- M, Jain M, Vashishtha P, Gupta G, Sharma A, Von SO, Vij A, Thakur A. Switchable cool and cold white emission from dysprosium doped SrZnO 2. J Phys Condens Matter 2020; 33:035703. [PMID: 32992301 DOI: 10.1088/1361-648x/abbc9c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In presented work, excitation selective novel cool and cold white emission is reported from dysprosium (Dy) doped SrZnO2nanophosphors, synthesized by combustion technique. The host lattice provided selective excitation routes for Dy3+levels and intrinsic defects levels via charge transfer (270 nm) and host defects absorption bands (375 nm), respectively. The emission due to Dy3+levels was found to be exhibiting cool white emission and that from intrinsic defects was cold white emission, as characterized from correlated color temperature. UV irradiated glow curve analysis complemented the results by exhibiting signal due to Dy assisted traps on near UV exposure (254 nm) and that of host related traps at far UV exposure (365 nm). The luminescence phenomenon is comprehended through proposed band model. The obtained results proclaimed SrZnO2:Dy as a potential member among white emitting phosphors to be used as standard daylight sources in commercial and aesthetic lighting.
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Affiliation(s)
- Manju -
- Punjabi University, Patiala, Punjab, INDIA
| | - Megha Jain
- Punjabi University, Patiala, Punjab, INDIA
| | | | | | - Aditya Sharma
- Advanced Analysis Centre, Manav Rachna International University, Faridabad, Haryana, INDIA
| | - Sung Ok Von
- Korea Institute of Science and Technology, Seongbuk-gu, Seoul, Korea (the Republic of)
| | - Ankush Vij
- Nano Analysis Centre Beam-line Division Pohang Accelerator Lab, Amity University Haryana, Gurgaon, Haryana, INDIA
| | - Anup Thakur
- Basic & Applied Sciences, Punjabi University, Patiala, 147002, INDIA
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Trindade NM, Cruz MR, Yoshimura EM. Correlation between thermoluminescence and optically stimulated luminescence responses of natural alexandrite. Appl Radiat Isot 2020; 166:109402. [PMID: 32911438 DOI: 10.1016/j.apradiso.2020.109402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 08/11/2020] [Accepted: 08/27/2020] [Indexed: 11/28/2022]
Abstract
Luminescent properties of alexandrite crystals (BeAl2O4:Cr3+) are studied. Partial readouts of thermoluminescence (TL) and optically stimulated luminescence (OSL) signals were obtained to infer the relations of OSL and TL trapping centers. Four TL peaks were studied; their intensities decrease at different rates by illumination with blue OSL light. The OSL curve shows two-time components (exponential decay constants 3.15 and 28.4 s). The short time component is preferentially diminished when the sample is heated to temperatures from 363 to 513 K. About 50% of the whole TL intensity remains after a complete 300s OSL readout.
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Affiliation(s)
- N M Trindade
- Department of Physics, Federal Institute of Education, Science and Technology of São Paulo, IFSP, São Paulo, SP, Brazil; Institute of Physics, University of São Paulo - USP, São Paulo, SP, Brazil.
| | - M R Cruz
- Institute of Physics, University of São Paulo - USP, São Paulo, SP, Brazil
| | - E M Yoshimura
- Institute of Physics, University of São Paulo - USP, São Paulo, SP, Brazil
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Karampiperi M, Tsirliganis NC, Kazakis NA. Use of commercial pharmaceutical drug (Daktarin®) for retrospective/accidental/forensic thermoluminescence dosimetry. Appl Radiat Isot 2020; 166:109364. [PMID: 32829145 DOI: 10.1016/j.apradiso.2020.109364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/22/2020] [Accepted: 07/30/2020] [Indexed: 11/30/2022]
Abstract
Retrospective/accidental dosimetry seeks for materials that can be used as probes for the dose assessment by means of several methods when there is no dose data available (e.g. from personal dosimeters). In the same respect, researchers also seek materials appropriate for forensic purposes, which would allow to identify the prior presence of radioactive materials at buildings, sites or even vehicles. To this direction, several solid-state drugs, which are ubiquitous, have also been studied as probes for the dose estimation in emergency situations. However, due to their heat-sensitive character, measurements were possible only with OSL. The scope of the present work is to identify a heat-resistant drug (Daktarin) and conduct, for the first time, a detailed study of the thermoluminescence properties of it along with computerized curve deconvolution analysis which would shed light on the traps involved. Results indicate that the glow curve of Daktarin has at least three peaks that can be used for dosimetric purposes, since they exhibit linear dose response for doses up to 20 Gy, do not exhibit any sensitization, have high lifetime and their stability with time is good, since an appreciable signal remains unaffected even 3 months post irradiation. All the above were validated conducting dose recovery tests and successfully calculating the unknown delivered dose for various periods after the irradiation of the samples. The new findings are very supportive and point towards the efficient use of commercial pharmaceuticals as probes for retrospective/accidental/forensic dosimetry using thermoluminescence.
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Affiliation(s)
- Maria Karampiperi
- Laboratory of Archaeometry and Physicochemical Measurements, R.C. 'Athena', P.O. Box 159, Kimmeria University Campus, 67100, Xanthi, Greece
| | - Nestor C Tsirliganis
- Laboratory of Archaeometry and Physicochemical Measurements, R.C. 'Athena', P.O. Box 159, Kimmeria University Campus, 67100, Xanthi, Greece
| | - Nikolaos A Kazakis
- Laboratory of Archaeometry and Physicochemical Measurements, R.C. 'Athena', P.O. Box 159, Kimmeria University Campus, 67100, Xanthi, Greece.
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Wahib NB, Abdul Sani SF, Ramli A, Ismail SS, Abdul Jabar MH, Khandaker MU, Daar E, Almugren KS, Alkallas FH, Bradley DA. Natural dead sea salt and retrospective dosimetry. Radiat Environ Biophys 2020; 59:523-537. [PMID: 32462382 DOI: 10.1007/s00411-020-00846-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Accidents resulting in widespread dispersal of radioactive materials have given rise to a need for materials that are convenient in allowing individual dose assessment. The present study examines natural Dead Sea salt adopted as a model thermoluminescence dosimetry system. Samples were prepared in two different forms, loose-raw and loose-ground, subsequently exposed to 60Co gamma-rays, delivering doses in the range 2-10 Gy. Key thermoluminescence (TL) properties were examined, including glow curves, dose response, sensitivity, reproducibility and fading. Glow curves shapes were found to be independent of given dose, prominent TL peaks for the raw and ground samples appearing in the temperature ranges 361-385 ºC and 366-401 ºC, respectively. The deconvolution of glow curves has been undertaken using GlowFit, resulting in ten overlapping first-order kinetic glow peaks. For both sample forms, the integrated TL yield displays linearity of response with dose, the loose-raw salt showing some 2.5 × the sensitivity of the ground salt. The samples showed similar degrees of fading, with respective residual signals 28 days post-irradiation of 66% and 62% for the ground and raw forms respectively; conversely, confronted by light-induced fading the respective signal losses were 62% and 80%. The effective atomic number of the Dead Sea salt of 16.3 is comparable to that of TLD-200 (Zeff 16.3), suitable as an environmental radiation monitor in accident situations but requiring careful calibration in the reconstruction of soft tissue dose (soft tissue Zeff 7.2). Sample luminescence studies were carried out via Raman and Photoluminescence spectroscopy as well as X-ray diffraction, ionizing radiation dependent variation in lattice structure being found to influence TL response.
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Affiliation(s)
- Norfadira Binti Wahib
- Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Centre for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia
| | - S F Abdul Sani
- Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Ain Ramli
- Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - S S Ismail
- Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | | | - M U Khandaker
- Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Centre for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia
| | - E Daar
- Department of Physics, The University of Jordan, Amman, 11942, Jordan
| | - K S Almugren
- Department of Physics, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - F H Alkallas
- Department of Physics, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - D A Bradley
- Centre for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia
- Department of Physics, University of Surrey, Guildford, Surrey, GU2 7XH, UK
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Toktamış H, Ünsal ÖL, Toktamış D, Yazıcı AN. Thermoluminescence properties of unique Rosso Levanto marble. LUMINESCENCE 2020; 36:142-148. [PMID: 32725715 DOI: 10.1002/bio.3928] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/07/2020] [Accepted: 07/27/2020] [Indexed: 11/08/2022]
Abstract
This marble extracted from deposits in Elazığ in Turkey resembles red meat in appearance and is only found in Elazığ. This type of marble has been widely used in the most famous architectural structures and buildings. In this study, the thermoluminescence (TL) properties of a unique marble that originated from Turkey, named Rosso Levanto, were investigated. Two distinct TL peaks were observed at 160°C and around 375°C. Particle size experiments showed that best TL intensity was seen at 200 μm particle size and therefore dose-response, heating rate, cycle of measurement and fading experiments were carried out on powdered samples with a particle size of 200 μm. The findings revealed good linearity in dose-response, observed up to 0.5 kGy. The reproducibility experiment gave good results, but peak intensity decreased by about 40% in first 6 h of storage in a dark room.
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