Influences of dysprosium and phosphorous oxides co-doping on thermoluminescence features and kinetic parameters of lithium magnesium borate glass

Mhareb, M.H.A.; Hashim, Suhairul; Ghoshal, Sib Krishna; Alajerami, Y.S.M.; Saleh, Muneer Aziz; Azizan, S. A. B.; Razak, Nashru Amira; Karim, Muhammad Khalis Abdul

doi:10.1007/s10967-015-3984-x

Cited by 29 publications

(6 citation statements)

References 27 publications

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“…It is important to study the luminescence of Dy 3+ ions in level 4 F 9/2 because it occurs in visible and NIR regions [8,9]. Usually, transitions of Dy 3+ ion exhibit in yellow or blue regions of 4 F 9/2 → 6 H 13/2 (electric dipole) and 4 F 9/2 → 6 H 15/2 (magnetic dipole), respectively [10,11]. It has been established that the transition of 4 F 9/2 → 6 H 13/2 is hypersensitive, and therefore, its intensity depends heavily upon the existence of the host, while the intensity of transition of 4 F 9/2 → 6 H 15/2 is not quite sensitive to host conditions.…”

Section: Introductionmentioning

confidence: 99%

Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

et al. 2020

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In this study, a series of Li2O-Al2O3-B2O3 glasses doped with various concentrations of Dy2O3 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 mol%) were prepared by using a conventional melt-quenching technique. The structural, physical and optical properties of the glasses were examined by utilising a variety of techniques instance, X-ray diffraction (XRD), UV–Vis-NIR spectrometer, Fourier transform infrared (FTIR) and photoluminescence (PL). The XRD spectra demonstrate the amorphous phase of all glasses. Furthermore, the UV-vis-NIR spectrometers have registered optical absorption spectra a numbers of peaks which exist at 1703, 1271, 1095, 902, 841, 802, 669, 458, 393 and 352 nm congruous to the transitions from the ground of state (6H15/2) to different excited states, 6H11/2, 6F11/2 + 6H9/2, 6F9/2 + 6H7/2, 6F7/2, 6F5/2, 6F3/2, 4F9/2, 4I15/2, 4F7/2 and 6P7/2, respectively. The spectra of emission exhibit two strong emanation bands at 481 nm and 575 nm in the visible region, which correspond to the transitions 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2. All prepared glass samples doped with Dy2O3 show an increase in the emission intensity with an increase in the concentration of Dy3+. Based on the obtained results, the aforementioned glass samples may have possible applications, such as optical sensor and laser applications.

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Section: Introductionmentioning

confidence: 99%

Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

et al. 2020

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“…Recently, different compositions of borate glasses have attracted the attention of several research groups focused on dosimetry based on thermoluminescence (TL) emission. This is due to the good stability of the TL signal, interesting temperature of emission, and effective atomic number near to that of human soft tissue (Z eff ≈ 7.4) or human bone (Z eff ≈ 13.8) . Lead borate glasses in the binary composition 33PbO–67B 2 O 3 in mol % have recently been investigated using TL and showed an increase in emission after a controlled crystallization process…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence emission on lead oxychloroborate glasses under UV exposure

et al. 2019

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Glassy materials were prepared using two different systems: 50B 2 O 3 -(50 − x)PbO − xPbCl 2, with x = 0, 2 and 5 in mol % (System BPCl-I) and 50BO 1.5 -(50 − x)PbO − xPbCl 2 with x = 0, 2, 5 and 7 in cationic % (System BPCl-II). Structural and optical characterization showed that PbCl when substituted for PbO changed the structure of the glass network by replacing nonbridging oxygens for chlorine ions. This substitution also caused a change in the number of defects responsible for thermoluminescence (TL) emission (electrons and hole trap centres). Thermoluminescence emissions were observed for the first time in lead oxychloroborate glasses after exposure to UV radiation. Sample BPCl-I-2 (x = 2 from System I) demonstrated better TL emission compared with other glass samples. One intense peak in the glow curve, centred at 122°C followed by a shoulder at~180°C, was highly sensitive to UV radiation. There were also good linear responses at dose range~0.4 to~2 J/cm 2 for the first peak (low temperature) and~0.4 to~4 J/cm 2 for the second peak (high temperature).

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“…This emission locates within the detection region for most of the photomultiplier tubes (PMT) for any TLD reader that leads to the use of Dy ions to improve TL features for different hosts . The exposure of TLDs doped with dysprosium ion to ionizing radiation produces quantitatively excited Dy atoms that efficiently capture electrons/holes in the host matrix …”

Section: Introductionmentioning

confidence: 99%

Dosimetric features and kinetic parameters of a glass system dosimeter

Mhareb

Alajerami²,

Alqahtani

et al. 2019

Luminescence

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Lithium borate (LB) glasses doped with dysprosium oxide (Dy 2 O 3 ) have been prepared by utilizing the conventional melt-quench technique. The prepared glass samples were exposed to 60 Co to check their dosimetric features and kinetic parameters.These features involve glow curves, annealing, fading, reproducibility, minimum detectable dose (MDD), and effective atomic number (Z eff ). Kinetic parameters including the frequency factors and activation energy were also determined using three methods (glow curve analysis, initial rise, and peak shape method) and were thoroughly interpreted. In addition, the incorporation of Dy impurities into LB enhanced the thermoluminescence sensitivity~170 times. The glow from LB:Dy appeared as a single prominent peak at 190 C. The best annealing proceeding was obtained at 300 C for 30 min. Signal stability was reported for a period of 1 and 3 months with a reduction of 26% and 31%, respectively. The proposed glass samples showed promising dosimeter properties that can be recommended for personal radiation monitoring. K E Y W O R D Sdosimetric features, kinetic parameters, lithium borate

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Influences of dysprosium and phosphorous oxides co-doping on thermoluminescence features and kinetic parameters of lithium magnesium borate glass

Cited by 29 publications

References 27 publications

Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

Thermoluminescence emission on lead oxychloroborate glasses under UV exposure

Dosimetric features and kinetic parameters of a glass system dosimeter

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