OSL dosimetric properties and efficiency of Brazilian natural calcium fluoride pellets

Malthez, Anna Luiza Metidieri Cruz; Marczewska, B.; Ferreira, Felisberto Alves; Umisedo, Nancy K.; Nowak, T.; Bilski, P.; Yoshimura, Elisabeth Mateus

doi:10.1016/j.apradiso.2018.01.041

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…In 2018, Malthez et al presented a low-cost method for producing CaF 2 OSLD films consisting of natural fluorite powder in a semi-organic matrix based on acetic silicone (Malthez et al 2018). In 2019, Pagotto et al (2019) studied the energy response of CAF 2 OSLD films for personal dosimetry.…”

Section: Caf 2 Osld Filmmentioning

confidence: 99%

“…The characterization of other materials that can be used with the OSL technique has been described in several scientific articles. Owing to the advantages of the OSL technique, various research groups have been working on the development of new OSL materials, including synthetic materials such as lithium magnesium phosphate (LiMgPO 4 ) and lithium aluminum oxide (LiAlO 2 ), and studying the luminescent and dosimetric properties of natural materials such as fluoride ore (Mittani et al 2008, Pradhan et al 2008, Malthez et al 2018, Yoshimura and Yukihara 2006a, 2006b. In addition to material development, research groups are working on developing OSL detectors in the form of films for dose mapping applications.…”

Section: Introductionmentioning

confidence: 99%

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Using the optically stimulated luminescence technique for one- and two-dimensional dose mapping: a brief review

Gasparian¹,

Malthez²,

Rodrigues³

2022

Phys. Med. Biol.

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In respect of radiation dosimetry, several applications require dose distribution verification rather than absolute dosimetry. Most protocols use radiological and radiochromic films and ionization chambers or diode arrays for dose mapping. The films are disposable which causes the precision of the results dependent on film production variability. The measurements with arrays of ionization chambers or diodes mainly lack spatial resolution. This review aims to provide an overview of the use of optically stimulated luminescence detectors (OSLDs) for one-dimensional (1D) and two-dimensional (2D) dose mapping in different applications. It reviews the ideas, OSL materials, and applications related to the assessment of dose distribution using OSLDs in the form of film or ceramic plate (BeO). Additionally, it reviews research published in the international scientific literature from 1998 to 2021. As an outcome, a table containing the main characteristics of each relevant paper is shown. The results section was divided by the type of OSL material, and we briefly described the principal findings and the significant developments of each mentioned study such as film production and OSL reader assembly. The purpose of this study was to present an overview of the main findings of several research groups on the use of OSLD in the form of film or plate for 1D and 2D dose mapping. Finally, the potential future development of dose mapping using OSLD films was outlined.

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Section: Caf 2 Osld Filmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using the optically stimulated luminescence technique for one- and two-dimensional dose mapping: a brief review

Gasparian¹,

Malthez²,

Rodrigues³

2022

Phys. Med. Biol.

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“…For that reason, several researchers are studying the production of new dosimetric materials exploring the OSL technique. Among natural materials with possible applicability in dosimetry, the natural fluoride rocks composed of calcium fluoride and natural salt has shown potential [9]. In the…”

Section: Introductionmentioning

confidence: 99%

Study of the dosimetric properties of CaSO₄:Dy using OSL technique

et al. 2022

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Calcium sulfate doped with dysprosium (CaSO4:Dy) has been used for personal dosimetry using the thermoluminescence (TL) technique for decades and its TL properties are well-known. Considering the advantages of the OSL technique (relatively simple and faster readout and detector reusability) and the potential application of CaSO4:Dy as an OSL detector, this study aimed to investigate the dosimetric properties of CaSO4:Dy using the OSL technique. The present study was carried out using CaSO4:Dy pellets prepared at IPEN irradiated and read in a TL/OSL Risø reader with blue light stimulation and Hoya U-340 filter. OSL dosimetric properties essentially dose response, reproducibility, and fading characteristics were evaluated. Moreover, TL and OSL signals were compared to study the correlation between OSL signals and TL peaks. CaSO4:Dy OSL response is linear from 0.1 to 10 Gy and shows reproducibility better than 5%. The low-temperature TL peak is unstable; however, the OSL signal seems to be associated with higher-temperature peaks.

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“…Além disso, há evidências de uma possível relação entre a energia dos fótons de raios X com o formato das curvas TL/OSL. Portanto seria possível discriminar a energia do fóton incidente sem necessariamente usar filtros (MALTHEZ, et al, 2018).…”

Section: Considerações Iniciaisunclassified

Estudo das respostas OSL e TA-OSL de pastilhas à base de fluorita natural visando o emprego na dosimetria pessoal de trabalhadores em radiologia diagnóstica

Lima¹

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Aos meus pais por todo apoio e incentivo.A minha professora Elisabeth, pela orientação e dedicação me ajudando desde a graduação e sendo um exemplo de profissionalismo.A Vanessa por todo o apoio e companheirismo durante todos esses anos.A todo o grupo da Dosimetria, em especial a Nancy que não tenho palavras para descrever o quanto ela me ajudou nesse trabalho, me fornecendo material quando já não tinha tanto tempo para fabricação devido aos meses de fases mais restritivas gerada pela pandemia de COVID-19. Ao Carlos sempre ajudando no reparo dos equipamentos. Ao Chico sempre disposto a me ajudar.Aos amigos do LUMIDOSI, Juan e Matheus pela colaboração em diversos trabalhos e momentos de descontração. Ao professor Neilo pela colaboração e ensinamentos. Aos demais, meus sinceros agradecimentos. cargas aprisionadas possam ser liberadas de uma armadilha muito profunda cujo valor aqui determinado é EA = (0.36 ± 0.05) eV, bastante próximo do valor já reportado na literatura.Palavras chaves: Dosimetria, Luminescência opticamente estimulada (OSL), Termoluminescência (TL), Fluorita natural, OSL termicamente assistida (TA-OSL).

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OSL dosimetric properties and efficiency of Brazilian natural calcium fluoride pellets

Cited by 11 publications

References 15 publications

Using the optically stimulated luminescence technique for one- and two-dimensional dose mapping: a brief review

Using the optically stimulated luminescence technique for one- and two-dimensional dose mapping: a brief review

Study of the dosimetric properties of CaSO₄:Dy using OSL technique

Estudo das respostas OSL e TA-OSL de pastilhas à base de fluorita natural visando o emprego na dosimetria pessoal de trabalhadores em radiologia diagnóstica

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OSL dosimetric properties and efficiency of Brazilian natural calcium fluoride pellets

Cited by 11 publications

References 15 publications

Using the optically stimulated luminescence technique for one- and two-dimensional dose mapping: a brief review

Using the optically stimulated luminescence technique for one- and two-dimensional dose mapping: a brief review

Study of the dosimetric properties of CaSO4:Dy using OSL technique

Estudo das respostas OSL e TA-OSL de pastilhas à base de fluorita natural visando o emprego na dosimetria pessoal de trabalhadores em radiologia diagnóstica

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Study of the dosimetric properties of CaSO₄:Dy using OSL technique