Thermoluminescent dosimetric comparison for two different MgB4O7:Dy production routes

Souza, Luiza Freire de; Vidal, Rogério Matias; Souza, S.O.; Souza, Divanízia do Nascimento

doi:10.1016/j.radphyschem.2014.04.036

Cited by 32 publications

(9 citation statements)

References 10 publications

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“…Magnesium tetraborate is normally produced by reacting boric acid with magnesium oxide at a temperature of approximately 900 °C under an oxygen atmosphere. 63,64 It is well known that magnesium oxide (MgO) has F s , F s + , and F s 2+ color centers (oxygen vacancies containing two, one, and no electrons, respectively) on the surface. 65–68 Oxygen vacancies on the surface of MgO are created during the decomposition process of magnesium precursors ( e.g.…”

Section: Resultsmentioning

confidence: 99%

Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB₄O₇compound: an atomistic simulation approach

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB₄O₇compound: an atomistic simulation approach

et al. 2022

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“…The pellets of MgB 4 O 7 :Dy (40% Teflon), called MBO, were produced at the Department of Physics at the Federal University of Sergipe [16]. The MTS-N pellets were produced by the TLD Poland company [17].…”

Section: Methodsmentioning

confidence: 99%

“…There are several possibilities how to produce synthetic magnesium tetraborate, for example, sol-gel method, combustion, wet reaction synthesis, solid-state route and precipitation (crystal growth). The most commonly used synthesis methods are the wet reaction (precipitation) and solid-state synthesis, both are described in detail in [16]. Their TL reproducibility and sensitivity were analyzed after gamma irradiation within doses in a range from 10 to 100 Gy.…”

Section: Introductionmentioning

confidence: 99%

Analysis of dosimetric peaks of MgB₄O₇:Dy (40% Teflon) versus LiF:Mg,Ti TL detectors

et al. 2016

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Abstract. Magnesium tetraborate doped with dysprosium (MgB 4 O 7 :Dy) is known as a good thermoluminophor for personal dosimetry of gamma ray and X-ray radiation because of its high sensitivity and close tissue equivalence. This material can be produced by different routes. The sintered pastilles of magnesium tetraborate mixed with Tefl on (40%) used in this work were manufactured at the Federal University of Sergipe, Department of Physics by the solid-state synthesis. Magnesium tetraborate was already used for high-dose dosimetry, exhibiting linearity for a wide range of doses. In this work, the authors examined its main characteristics prior to potential use of detectors in everyday dosimetry, comparing this material to a widely used LiF:Mg,Ti phosphor. The following tests infl uencing dosimetric peaks of MgB 4 O 7 :Dy were presented: (1) the shape of the glow curves, (2) annealing conditions and post-irradiation annealing and its infl uence for background of the detectors, (3) the choice of the heating rates at the read-out and (4) the threshold dose, that is, the lowest possible dose to be measured. Simil ar tests were performed with LiF:Mg,Ti detectors, produced and widely used in Poland. The results were compared and discussed.

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“…This can be explained by the decreasing hygroscopicity at reaction temperatures higher than 950°C and the ease of solidstate synthesis methods [11,[23][24][25]. Souza et al [26] compared the thermoluminescence features of the synthesized magnesium borates in liquid-state and solid-state conditions and indicated better results of dehydrated samples [26]. MgB 4 O 7 is the most studied composition among the magnesium borates, due to its thermoluminescence behavior.…”

Section: Thermoluminescencementioning

confidence: 99%

“…The studies on the thermoluminescence behavior of magnesium borates indicated their suitability of them in beta, neutron, and radiation dosimetry. Several rare earth elements of Cerium, Dysprosium, Samarium, Silver, Terbium, Thulium, have been doped to increase their efficiency in applications [23,[26][27][28][29]. Also, Prokic and Christeen [30] and Pellicioni et al [31] experimented with the beneficial effects of graphite addition to magnesium borates; and the 3% graphite content was determined suitable for the optimum thermoluminescence [30,31].…”

Section: Thermoluminescencementioning

confidence: 99%

Magnesium Borates: The Relationship between the Characteristics, Properties, and Novel Technologies

Dumanli¹

2022

Current Trends in Magnesium (Mg) Research

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Magnesium borates are compounds including mainly magnesium (Mg), boron (B) oxygen (O), and hydrogen (H). Magnesium borates are traditionally famous for their strong thermoluminescence, mechanical and thermal features due to their high elasticity coefficient, corrosion, and heat resistance. Because of being beneficial, especially in the applications such as thermoluminescence and X-ray screening, and ease of synthesis, magnesium borates are produced by using different experimental procedures exhibiting different characteristics. Main traditional synthesis techniques can be classified as liquid state and solid-state synthesis methods. With the help of novelties in synthesis technology, new techniques are beginning to emerge in magnesium borate syntheses such as hybrid synthesis, ultrasound, microwave, and capping agent addition. The strengthened characteristics of the compounds would lead to new applications such as stomach cancer chemotherapy and wastewater treatment. In this chapter, it is aimed to make a comparison between the characteristics of synthesized magnesium borates and their properties. In addition, new types of magnesium borates obtained by various synthetic techniques are expected to be useful for industrial applications such as space technology, radiation dosimetry, X-ray screening, ion batteries, and hydrocarbon reaction catalysis. Such classification of properties and the synthesis techniques will enlighten the relationship between the characteristics and novel applications of magnesium borates.

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Thermoluminescent dosimetric comparison for two different MgB4O7:Dy production routes

Cited by 32 publications

References 10 publications

Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB₄O₇compound: an atomistic simulation approach

Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB₄O₇compound: an atomistic simulation approach

Analysis of dosimetric peaks of MgB₄O₇:Dy (40% Teflon) versus LiF:Mg,Ti TL detectors

Magnesium Borates: The Relationship between the Characteristics, Properties, and Novel Technologies

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Thermoluminescent dosimetric comparison for two different MgB4O7:Dy production routes

Cited by 32 publications

References 10 publications

Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB4O7compound: an atomistic simulation approach

Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB4O7compound: an atomistic simulation approach

Analysis of dosimetric peaks of MgB4O7:Dy (40% Teflon) versus LiF:Mg,Ti TL detectors

Magnesium Borates: The Relationship between the Characteristics, Properties, and Novel Technologies

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Product

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Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB₄O₇compound: an atomistic simulation approach

Elucidating the effect of intrinsic defects on the dosimetric properties of the MgB₄O₇compound: an atomistic simulation approach

Analysis of dosimetric peaks of MgB₄O₇:Dy (40% Teflon) versus LiF:Mg,Ti TL detectors