Synthesis and thermoluminescent response to γ-rays and neutrons of MgB4O7:Dy and MgB4O7:Dy,Na

Torres-Cortés, Carina Oliva; Hernández‐Adame, Luis; Baltazar-Raigosa, Antonio; Vega‐Carrillo, Héctor René; Rodríguez-López, José Luis; Pérez-Arrieta, M. L.

doi:10.1016/j.apradiso.2019.03.001

Cited by 11 publications

(2 citation statements)

References 25 publications

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“…In the study by Torres-Cortés et al [53], the composites MBO:Dy and MBO:Dy,Na were investigated, and it was observed that MBO doped only with Dy exhibits a low TL signal with a peak around 250 o C. The co-doping with Na (MBO:Dy,Na) intensifies the TL signal and increases the temperature of its peak, which is located at 222 o C. So far, no studies explaining the role of Dy and Na in the MBO matrix have been found. Nevertheless, the EPR studies by Gundu Rao et al [54] suggest that Dy acts as hole traps in the irradiation process of the CaSO4 material and the co-dopant Na acts as a compensator for excess negative charges of the SO4 -1 centers.…”

Section: Mechanisms Involved In the Luminescence Of Mbo And Lbomentioning

confidence: 94%

Challenges in personal and clinical dosimetry using Li2B4O7 and MgB4O7 as TLD and OSLD

Oliveira¹,

Souza²,

Donald³

et al. 2022

Braz. J. Rad. Sci.

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Thermoluminescent (TLD) and optically stimulated luminescent dosimeters (OSLD) are essential in radiation dosimetry. Such dosimeters can be easily transported due to their small size and can be used in in vivo dosimetry and anthropomorphic simulations. In this work, the dosimetric properties of Li2B4O7 and MgB4O7 compounds were evaluated based on their response to the applied stimulus, whether thermal or optical. The linear dose response range of the luminescent signal, its fading, the lowest detectable dose, and reproducibility are important parameters in determining a good dosimeter for clinical and personal dosimetry. Therefore, the objective of this work was, based on studies performed by other authors on dosimetric characterizations of doped a codoped Li2B4O7 and MgB4O7, to point out those compounds with the greatest potential for applications in personal and clinical dosimetry using TL and OSL techniques. Considering the results described in other works, the materials that stood out for use in personal and clinical dosimetry were Li2B4O7:Cu and MgB4O7:Dy,Na. In several of the reported studies, no data related to LDD, fading and reproducibility of the luminescent signal of the investigated compounds were found. Therefore, there are many possibilities for investigations into these two types of compounds for the purpose of their use in personal and clinical dosimetry. Further studies will provide a broader scientific basis for choosing appropriate dosimetric materials for these applications.

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Section: Mechanisms Involved In the Luminescence Of Mbo And Lbomentioning

confidence: 94%

Challenges in personal and clinical dosimetry using Li2B4O7 and MgB4O7 as TLD and OSLD

Oliveira¹,

Souza²,

Donald³

et al. 2022

Braz. J. Rad. Sci.

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show abstract

“…However, pure borate glass has some undesired properties before it can be utilized in radiation dosimetry for its high hygroscopicity and weak TL glow peak at generally low temperatures. As such, alkali oxides or lanthanides ion especially Dy 3+ ion addition into borate is used to solve it [11][12][13] [14]. Some research revealed that sample MgB 4 O 7 doped by 1% Dy sample is more sensitive to neutron rather than un-doped MgB 4 O 7 , 0.1% and 0.5% Dy doped MgB 4 O 7 [15].…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Simulation on PTFE-Bound MgB4O7:Dy Film for Neutron Dosimetry

Prastowo,

Isnaini,

Abdurrosyid

et al. 2024

Preprint

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Magnesium borate (MgB4O7) is currently being studied as the material for neutron dosimetry. To become a proper dosimeter, magnesium borate is doped with dysprosium as the activator and PTFE (polytetrafluoroethylene) is used as the binder. To estimate the response of PTFE-bound MgB4O7:Dy for neutron dosimetry, Monte Carlo simulation was conducted by PHITS (Particle and Heavy Ion Transport Code System) software. The simulation consisted of dosimeter film of said materials attached to a simplified human phantom. The amount of PTFE ranged from 50% to 90% and the thickness of the film was varied from 0.5 mm to 2.5 mm. The result showed that this film dosimeter had high response to thermal neutrons and low response to fast neutrons, in contrast with the response of human body. Furthermore, it also suggested that the sample with the highest MgB4O7 content had the lowest absorbed dose due to self-shielding effect while on the thicker film, the effect of self-shielding also reduced the sensitivity of this film dosimeter.

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Technology development and performance study of various thermoluminescent detectors

Mosyagina,

Ivkina,

Sharipova

2023

At Energy

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Synthesis and thermoluminescent response to γ-rays and neutrons of MgB4O7:Dy and MgB4O7:Dy,Na

Cited by 11 publications

References 25 publications

Challenges in personal and clinical dosimetry using Li2B4O7 and MgB4O7 as TLD and OSLD

Challenges in personal and clinical dosimetry using Li2B4O7 and MgB4O7 as TLD and OSLD

Monte Carlo Simulation on PTFE-Bound MgB4O7:Dy Film for Neutron Dosimetry

Technology development and performance study of various thermoluminescent detectors

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