Investigation of neutron converters for production of optically stimulated luminescence (OSL) neutron dosimeters using Al2O3:C

Mittani, Juan Carlos Ramírez; Silva, A.A.R. da; Vanhavere, F.; Akselrod, M.S.; Yukihara, E.G.

doi:10.1016/j.nimb.2007.03.083

Cited by 38 publications

(9 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Until recently Al 2 O 3 :C OSL detectors were used only for photons and beta radiation. Measurements of neutrons using OSL became possible with the development of neutron sensitive material (OSLN) in which grains of Al 2 O 3 :C are coated with Li 2 CO 3 material enriched with 6 Li isotope [27,28]. The new phosphor is a 50:50% composite of Al 2 O 3 :C and 6 Li 2 CO 3 obtained by fusion of two compounds followed by crashing and grinding.…”

Section: Dosimetric Properties Of Al 2 O 3 :C For Osl Applicationsmentioning

confidence: 99%

“…multiple) readouts using fully automated equipment, and possess the capability of being erased and reused. TL and OSL detectors, while fully reusable and highly sensitive to low-LET radiation, can only measure high-LET radiation of heavy charged particles (HCP) with reduced efficiency [78] and possess little or no sensitivity to fast neutrons [27,28]. In addition, TLD can only be read out a single time.…”

Section: Fluorescence Nuclear Track Detectorsmentioning

confidence: 99%

“…One of the most challenging dosimetry problems is neutron dosimetry. Thermal (<0.5 eV) and intermediate (0.5 eV-10 keV) neutrons are relatively easy to measure using TL and OSL detectors containing 6 Li and 10 B isotopes [3,27,28], but dosimetry of fast neutrons (>10keV) still remains one of the most difficult tasks. Novel fluorescent nuclear track detector (FNTD) technology is a new luminescent dosimetry technique suitable for replacing plastic nuclear track detectors (PNTD) in neutron dosimetry and LET spectroscopy of heavy charged particles [29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fundamentals of Materials, Techniques, and Instrumentation for OSL and FNTD Dosimetry

Akselrod

Rosenfeld²,

Kron³

et al. 2011

AIP Conference Proceedings

View full text Add to dashboard Cite

The optically stimulated luminescence (OSL) technique has already become a successful commercial tool in personal radiation dosimetry, medical dosimetry, diagnostic imaging, geological and archeological dating. This review briefly describes the history and fundamental principles of OSL materials, methods and instrumentation. The advantages of OSL technology and instrumentation in comparison with thermoluminescent technique are analyzed. Progress in material and detector engineering has allowed new and promising developments regarding OSL applications in the medical field. Special attention is dedicated to Al 2 O 3 :C as a material of choice for many dosimetric applications. Different aspects of OSL theory, materials optical and dosimetric properties, instrumentation, and data processing algorithms are described. The next technological breakthrough was done with Fluorescent Nuclear Track Detectors (FNTD) that have some important advantages in measuring fast neutron and high energy heavy charge particles that have become the latest tool in radiation therapy. New Mg-doped aluminum oxide crystals and novel type of imaging instrumentation for FNTD technology are discussed with regard to application in mixed neutron-gamma fields, medical dosimetry and radiobiological research.

show abstract

Section: Dosimetric Properties Of Al 2 O 3 :C For Osl Applicationsmentioning

confidence: 99%

Section: Fluorescence Nuclear Track Detectorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fundamentals of Materials, Techniques, and Instrumentation for OSL and FNTD Dosimetry

Akselrod

Rosenfeld²,

Kron³

et al. 2011

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…Moreover, OSL technique allows high sensitivity, precise delivery of light, fast readout time, simpler readers and easier automation [8]. In addition, the all-optical readout makes it possible to use plastic dosimeters either by mixing or imbedded OSL in plastic [25,26]. This presents a great interest for neutron dosimetry where neutrons interact with hydrogen and recoil protons are created.…”

Section: A Advantages Ofosl Dosimetrymentioning

confidence: 99%

Real-time fibered optically stimulated luminescence dosimeter based on SrS:Ce,Sm phosphor

Benoit

Garcia²,

Matias-Vaille³

et al. 2007

2007 9th European Conference on Radiation and Its Effects on Components and Systems

View full text Add to dashboard Cite

A novel real-time optical fibered dosimetry system based on optically stirn ulated luminescence (OSL) of SrS:Ce,Sm phosphor was developed and is presented. The advantages of this system are the combination of OSL and optical fibers, immediate readout, simplicity of use, low cost, reliability, flexibility, and robustness. Experimental results show an excellent linearity with the dose (0.01 to 6 Gy), repeatability better than 2%, radiation sensitivity up to 80 mV.cGy-l and accuracy since error on dose is less than 5%. The applications targeted are the measurement of the dose delivered during a treatment in radiation therapy and the monitoring of the dose or dose-rate around or in nuclear reactor and accelerator facilities in high energy physics. Further experiments are still to be conducted in order to fully characterize the system and evaluate the feasibility of each application mentioned.

show abstract

“…These materials were exposed to either gamma, neutron or electron beam irradiation and their use as dosimeters for high and very high radiation dose analyzed [37,38,43,[54][55][56][57]. Neutron detection from a nuclear reactor or neutron sources (such as Am-Be or 252 Cf) using thermoluminescence detectors has been a great challenge in radiation dosimetry, and several works have been devoted to investigating this process in the past [58,[63][64][65][66][67][68][69]. Particularly, interaction of thermal and epithermal neutron with matter has awakened special interest in some authors because a larger effective neutron capture cross-section than fast neutrons is found for some nuclides like 10 B and 6 Li [70][71][72].…”

Section: High and Very-high Radiation Dosementioning

confidence: 99%

Production of synthetic polycrystals of CaSiO3 and their study as new detectors of gamma radiation, thermal neutrons and accelerated ions.

Lorenzo¹

View full text Add to dashboard Cite

Em especial ao prof. Shigueo Watanabe pela sua orientação, paciência, disposição e apoio no desenvolvimento deste trabalho, incentivando a maioria das minhas decisões, agradeço muito. Ao Conselho Nacional de desenvolvimento Científico e Tecnológico (CNPq) pelo apoio financeiro. À Eng. Elizabeth Ribeiro Somessari, ao Eng. Carlos Gaia da Silveira do CTR-IPEN-SP; ao Aldo Oliveira e Vicente de Paulo Campos do GMR-IPEN-SP pelas inúmeras vezes que nos atenderam gentilmente para as irradiações gama realizadas neste trabalho. À Professora Carmen Cecilia Bueno do Centro de Tecnologia das Radiações-IPEN pela ajuda nas irradiações com nêutrons no reator nuclear de pesquisa IEA-R1 do IPEN. Ao Prof. Gundu Rao pela análise das medidas de EPR as quais ajudaram muito no aprimoramento do presente trabalho, e pela ajuda na revisão do inglês. Ao prof. Satoshi Kodaira do Instituto Nacional de Ciências Radiológicas (NIRS) em Chiba-Japão e à Dra. Luana Nascimento do Centro Belga de Pesquisa Nuclear (SCK•CEN) pela ajuda nas irradiações das nossas amostras com prótons e íons de carbono no NIRS. Ao Prof. Sergey Nikiforov e à colega Daria Ananchenko do Instituto de Física e Tecnologia da Universidade Federal dos Urais em Ecaterimburgo-Rússia por me aceitar no seu laboratório como parte de um estágio de pesquisa. ii Ao Dr. Tássio A. Cavalieri do Centro de Engenharia Nuclear do Instituto de Pesquisas Energéticas e Nucleares (CEN-IPEN-SP) pela importante colaboração e ajuda com as simulações de Monte Carlo. À Nancy Kuniko Umisedo do Laboratório de Dosimetria do IFUSP pelas irradiações com raios X. Aos Professores Nilo Cano, René Rojas e Fernando Chubaci pela paciência, compreensão e pela sua disponibilidade para responder às minhas dúvidas no desenvolvimento deste trabalho. À Dra. Roseli Gennari pela ajuda na mistura das amostras e pelas sugestões na produção dos policristais usados neste trabalho. À Edna Toledo pela ajuda e disposição nos processos burocráticos e os muitos momentos agradáveis na hora do café no LACIFID.

show abstract

Investigation of neutron converters for production of optically stimulated luminescence (OSL) neutron dosimeters using Al2O3:C

Cited by 38 publications

References 22 publications

Fundamentals of Materials, Techniques, and Instrumentation for OSL and FNTD Dosimetry

Fundamentals of Materials, Techniques, and Instrumentation for OSL and FNTD Dosimetry

Real-time fibered optically stimulated luminescence dosimeter based on SrS:Ce,Sm phosphor

Production of synthetic polycrystals of CaSiO3 and their study as new detectors of gamma radiation, thermal neutrons and accelerated ions.

Contact Info

Product

Resources

About