Luminescent properties of fluoride phosphate glass for radiation dosimetry

Kalnins, Christopher A. G.; Spooner, Nigel A.; Ebendorff-Heidepriem, Heike; Monro, Tanya M.

doi:10.1364/ome.3.000960

Cited by 9 publications

(4 citation statements)

References 12 publications

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“…4,5 Being closely related to other fluoride glasses, FP glasses share similarities relating to preform and fibre fabrication, such as the high scattering loss and fragility associated with surface defects. In the literature, these surface defects in fluoride glasses are commonly attributed to crystallisation during the preform and fibre fabrication processes.…”

Section: Introductionmentioning

confidence: 99%

Surface Analysis and Treatment of Extruded Fluoride Phosphate Glass Preforms for Optical Fiber Fabrication

et al. 2016

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The accepted version of an article is the version that incorporates all amendments made during the peer review process, but prior to the final published version (the Version of Record, which includes; copy and stylistic edits, online and print formatting, citation and other linking, deposit in abstracting and indexing services, and the addition of bibliographic and other material.Self-archiving of the accepted version is subject to an embargo period of 12-24 months. The embargo period is 12 months for scientific, technical, and medical (STM) journals and 24 months for social science and humanities (SSH) journals following publication of the final article.• the author's personal website • the author's company/institutional repository or archive • not for profit subject-based repositories such as PubMed Central Articles may be deposited into repositories on acceptance, but access to the article is subject to the embargo period.The version posted must include the following notice on the first page: "This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."The version posted may not be updated or replaced with the final published version (the Version of Record). Authors may transmit, print and share copies of the accepted version with colleagues, provided that there is no systematic distribution, e.g. a posting on a listserve, network or automated delivery.There is no obligation upon authors to remove preprints posted to not for profit preprint servers prior to submission. May 2017Surface analysis and treatment of extruded fluoride phosphate glass preforms for optical fibre fabrication Abstract Fabrication of fluoride phosphate glass optical fibres using the extrusion method for preform fabrication has been studied using the commercial Schott N-FK51A glass. The extrusion step was found to create a surface layer of differing composition from the bulk glass material, leading to defects drawn down onto the optical fibre surface during fibre fabrication, resulting in high loss and fragile fibres. Similar phenomena have also been observed in other fluoride-based glasses. Removal of this surface layer from preforms prior to fibre drawing was shown to improve optical fibre loss from >5 dB/m to 0.5 -1.0 dB/m. The removal of this surface layer is therefore necessary to produce low-loss fluoride phosphate optical fibres.

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Section: Introductionmentioning

confidence: 99%

Surface Analysis and Treatment of Extruded Fluoride Phosphate Glass Preforms for Optical Fiber Fabrication

et al. 2016

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“…six fibres for 8 Gy). 47 However, this would make the sensor relatively bulky for in vivo radiotherapy dosimetry.…”

Section: Gaza and Mckeevermentioning

confidence: 99%

A review of recent advances in optical fibre sensors forin vivodosimetry during radiotherapy

O'Keeffe¹,

McCarthy²,

Woulfe³

et al. 2015

BJR

105

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This article presents an overview of the recent developments and requirements in radiotherapy dosimetry, with particular emphasis on the development of optical fibre dosemeters for radiotherapy applications, focusing particularly on in vivo applications. Optical fibres offer considerable advantages over conventional techniques for radiotherapy dosimetry, owing to their small size, immunity to electromagnetic interferences, and suitability for remote monitoring and multiplexing. The small dimensions of optical fibre-based dosemeters, together with being lightweight and flexible, mean that they are minimally invasive and thus particularly suited to in vivo dosimetry. This means that the sensor can be placed directly inside a patient, for example, for brachytherapy treatments, the optical fibres could be placed in the tumour itself or into nearby critical tissues requiring monitoring, via the same applicators or needles used for the treatment delivery thereby providing real-time dosimetric information. The article outlines the principal sensor design systems along with some of the main strengths and weaknesses associated with the development of these techniques. The successful demonstration of these sensors in a range of different clinical environments is also presented.

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“…Since the emitted light output is proportional to the incident radiation dose, the stimulated light emission may be indirectly used as a probe of the incident radiation dose. Dosimeters which use heat to stimulate the signal are so-called thermally stimulated luminescent detectors (TLD) [9], while the ones which rely on an optical stimulation are referred to as optically stimulated luminescent detectors (OSLD) [10][11][12][13]. Examples of dosimeter materials used in practice include LiF:Mg,Ti [14], Al 2 O 3 :C [15,16], and BeO [17].…”

Section: Introductionmentioning

confidence: 99%

Aluminum Nitride Ceramic as an Optically Stimulable Luminescence Dosimeter Plate

et al. 2016

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Photostimulable storage phosphors have been used in a wide range of applications including radiation measurements in one-and two-dimensional spaces, called point dosimetry and radiography. In this work, we report that an aluminum nitride (AlN) ceramic plate, which is practically used as a heat sink (SHAPAL ® , Tokuyama Corp., Yamaguchi, Japan), shows good optically-stimulated luminescence (OSL) properties with sufficiently large signal and capability for imaging applications, and we have characterized the AlN plate for OSL applications. Upon interaction with X-rays, the sample color turns yellowish, due to a radiation-induced photoabsorption band in the UV-blue range below~500 nm. After irradiating the sample with X-rays, an intense OSL emission can be observed in the UV (360 nm) spectral region during stimulation by red light. Although our measurement setup is not optimized, dose detection was confirmed as low as~3 mGy to over 20 Gy. Furthermore, we have successfully demonstrated that the SHAPAL ® AlN ceramic plate has great potential to be used as an imaging plate in radiography.

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Luminescent properties of fluoride phosphate glass for radiation dosimetry

Cited by 9 publications

References 12 publications

Surface Analysis and Treatment of Extruded Fluoride Phosphate Glass Preforms for Optical Fiber Fabrication

Surface Analysis and Treatment of Extruded Fluoride Phosphate Glass Preforms for Optical Fiber Fabrication

A review of recent advances in optical fibre sensors forin vivodosimetry during radiotherapy

Aluminum Nitride Ceramic as an Optically Stimulable Luminescence Dosimeter Plate

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