A fiber-dosimetry method based on OSL from Al2O3:C for radiotherapy applications

Gaza, Ramona; McKeever, S.W.S.; Akselrod, M.S.; Akselrod, A. E.; Underwood, T. H.; Yoder, Craig; Andersen, C.E.; Aznar, Marianne C.; Marckmann, Carl Johan; Bøtter‐Jensen, L.

doi:10.1016/j.radmeas.2003.12.004

Cited by 53 publications

(52 citation statements)

References 3 publications

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“…The laser stimulation of the four dosimeter probes and their OSL responses are respectively delivered and collected by the PMTs through different fiber bundle arrangements. Using such kind of setup, it may be very interesting to couple the RL and OSL remote dosimetry techniques, according to the following two stimulation protocols [58], which are also illustrated in Figure 15: -Online RL measurements with post-irradiation OSL stimulation: the RL signal emitted by the dosimeter under irradiation (see Sect. 4.4) is acquired in real time at a rate of 10 to 100 readouts per second.…”

Section: Optically Stimulated Luminescent Dosimetrymentioning

confidence: 99%

“…The periodic stimulation of the OSLD during irradiation induces two antagonistic processes: the amount of trapped electrons within the gap increases due to radiation effects, while a part of them is released at each laser pulse [58]. Thus, the OSL signal acquired during the nth laser stimulation must be corrected for the fraction of electrons released during the (nÀ1) previous stimulation periods, according to equation (15):…”

Section: Optically Stimulated Luminescent Dosimetrymentioning

confidence: 99%

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State of the art on nuclear heating measurement methods and expected improvements in zero power research reactors

Guillou

Gruel

Destouches

et al. 2017

EPJ Nuclear Sci. Technol.

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Abstract. The paper focuses on the recent methodological advances suitable for nuclear heating measurements in zero power research reactors. This bibliographical work is part of an experimental approach currently in progress at CEA Cadarache, aiming at optimizing photon heating measurements in low-power research reactors. It provides an overview of the application fields of the most widely used detectors, namely thermoluminescent dosimeters (TLDs) and optically stimulated luminescent dosimeters. Starting from the methodology currently implemented at CEA, the expected improvements relate to the experimental determination of the neutron component, which is a key point conditioning the accuracy of photon heating measurements in mixed n-g field. A recently developed methodology based on the use of 7 Li and 6 Li-enriched TLDs, precalibrated both in photon and neutron fields, is a promising approach to deconvolute the two components of nuclear heating. We also investigate the different methods of optical fiber dosimetry, with a view to assess the feasibility of online photon heating measurements, whose primary benefit is to overcome constraints related to the withdrawal of dosimeters from the reactor immediately after irradiation. Moreover, a fibered setup could allow measuring the instantaneous dose rate during irradiation, as well as the delayed photon dose after reactor shutdown. Some insights from potential further developments are given. Obviously, any improvement of the technique has to lead to a measurement uncertainty at least equal to that of the currently used methodology (∼5% at 1s).

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Section: Optically Stimulated Luminescent Dosimetrymentioning

confidence: 99%

Section: Optically Stimulated Luminescent Dosimetrymentioning

confidence: 99%

State of the art on nuclear heating measurement methods and expected improvements in zero power research reactors

Guillou

Gruel

Destouches

et al. 2017

EPJ Nuclear Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…From the acquired data the dose rate and total dose can be derived. The method permits the suppression of the background noise and avoids the saturation of the OSL detector as trapped charges are periodically removed (Gaza et al, 2004). The "dynamic depletion" mechanism was applied also in the case of other OSL materials such as KBr:Eu .…”

Section: Extrinsic Optical Fiber Sensorsmentioning

confidence: 99%

Optical Fibers and Optical Fiber Sensors Used in Radiation Monitoring

Sporea¹,

Sporea²,

O'Keeffe³

et al. 2012

Selected Topics on Optical Fiber Technology

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“…Others are designed for personnel dosimetry application, such as the InLight™ system manufactured by Landauer Inc. All of these systems, however, are designed to have the sample (or dosimeter) placed inside the apparatus and none is appropriate for the current application. Polf et al (2004) and Gaza et al (2004) describe a fiber-optic system designed to measure absorbed doses by Al 2 O 3 :C OSL dosimeters. Overall design is based on similar systems described earlier by Justus et al (1999) and Huston et al (2001).…”

Section: Optical Stimulation Instrumentationmentioning

confidence: 99%

Technology Assessment and Roadmap for the Emergency Radiation Dose Assessment Program

Turteltaub¹,

Hartman-Siantar²,

Easterly³

et al. 2005

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A fiber-dosimetry method based on OSL from Al2O3:C for radiotherapy applications

Cited by 53 publications

References 3 publications

State of the art on nuclear heating measurement methods and expected improvements in zero power research reactors

State of the art on nuclear heating measurement methods and expected improvements in zero power research reactors

Optical Fibers and Optical Fiber Sensors Used in Radiation Monitoring

Technology Assessment and Roadmap for the Emergency Radiation Dose Assessment Program

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