A new luminescent material based on CaB6O10:Pb to detect radiation

Oliveira, Luiz Carlos; Baffa, Oswaldo

doi:10.1016/j.jlumin.2016.09.009

Cited by 12 publications

(6 citation statements)

References 27 publications

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“…In addition to the extrinsic defects, the CBO host is likely to possess intrinsic defects, as suggested by the TL and OSL of the compound with different single dopants, such as Pb, Ce, Gd or Ag. 28,38,39 This is in line with typical defects in borates such as oxygen vacancies 40,41 and boron–oxygen-hole-center, i.e. , a defect created by an oxygen that bridges two borate groups (BO 3 or BO 4 ).…”

Section: Introductionsupporting

confidence: 77%

A Tb and Ag co-doped borate compound forms a high sensitive X-ray, gamma-ray and neutron luminescence dosimeter

et al. 2023

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Section: Introductionsupporting

confidence: 77%

A Tb and Ag co-doped borate compound forms a high sensitive X-ray, gamma-ray and neutron luminescence dosimeter

et al. 2023

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“…However, the main disadvantage of the OSL dosimetry is the small number of wellcharacterized and suitable materials commercially available. For that reason, several researchers are studying the production of new dosimetric materials exploring the OSL technique [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

An overview study on the TL and OSL dosimetry patent processes over time

et al. 2023

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Since its discovery, ionizing radiation has been used in many different applications. Materials and methods have been developed to measure and quantify radiation doses. Thermoluminescence (TL) and Optically Stimulated Luminescence (OSL) are two techniques used for radiation dosimetry. Both TL and OSL are primarily applied in several areas, such as dating of ancient materials, equipment quality control and individual monitoring. One of the parameters to measure the knowledge and development of a technology is the number of patents related to the field. In this work, we established a methodology for patent search on the World Intellectual Property Organization (WIPO) database aiming to review the development of TL and OSL dosimetry over time. We concluded that along with the OSL technique development, the TL technique should continue to be explored in radiation dosimetry.

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“…Neutron Capture Therapy (NCT) is a specific radiation therapy characterised by a biological targeting of cancer at the cellular level. This advanced therapy combines an initial introduction and accumulation of nuclei with high neutron cross section (such as 10 B or 157 Gd) inside the tumour cells with a following irradiation with thermal neutrons. The 10 B or 157 Gd nuclei, when hit by thermal neutrons, undergo nuclear reactions where secondary charged particles (such as alpha particles, recoiling 7 Li nuclei or Auger electrons) with short subcellular range are released and are able to kill the tumour cells selectively (1)(2)(3) .…”

Section: Introductionmentioning

confidence: 99%

Improvement of neutron sensitivity for lithium formate EPR dosemeters: a Monte Carlo analysis

D’Oca,

Collura,

Gagliardo

et al. 2023

Radiation Protection Dosimetry

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This work presents the computational analysis of the sensitivity improvements that could be achieved in lithium formate monohydrate (LFM) electron paramagnetic resonance (EPR) dosemeters exposed to neutron beams. Monte Carlo (MC) simulations were performed on LFM pellets exposed to neutron beams with different energy spectra at various depths inside a water phantom. Various computations were carried out by considering different enrichments of 6Li inside the LFM matrix as well as addition of different amounts of gadolinium oxide inside the pellet blend. The energy released per unit mass was calculated with the aim of predicting the increase in dose achievable by the addition of sensitizers inside the pellets. As expected, a larger amount of 6Li induces an increase of energy released because of the charged secondary particles (i.e. 3H ions and α-particles) produced after neutron capture. For small depths in water phantom and low-energy neutron spectra the dose increase due to 6Li enrichment is high (more than three orders of magnitude with respect to the case of with 7Li). In case of epithermal neutron beams the energy released in 6Li-enriched LFM compound is smaller but larger than in the case of fast neutron beams. On the other hand, the computational analysis evidenced that gadolinium is less effective than 6Li in improving neutron sensitivity of the LFM pellets. Discussion based on the features of MC transport code is provided. This result suggests that 6Li enrichment of LFM dosemeters would be more effective for neutron sensitivity improvement and these EPR dosemeters could be tested for dosimetric applications in Neutron Capture Therapy.

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A new luminescent material based on CaB6O10:Pb to detect radiation

Cited by 12 publications

References 27 publications

A Tb and Ag co-doped borate compound forms a high sensitive X-ray, gamma-ray and neutron luminescence dosimeter

A Tb and Ag co-doped borate compound forms a high sensitive X-ray, gamma-ray and neutron luminescence dosimeter

An overview study on the TL and OSL dosimetry patent processes over time

Improvement of neutron sensitivity for lithium formate EPR dosemeters: a Monte Carlo analysis

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