Spatially resolved measurement of high doses in microbeam radiation therapy using samarium doped fluorophosphate glasses

Okada, Go; Morrell, Brian; Koughia, Cyril; Edgar, A.; Varoy, Chris; Belev, George; Wysokiński, Tomasz; Chapman, Dean; Kasap, S. O.

doi:10.1063/1.3633102

Cited by 87 publications

(49 citation statements)

References 16 publications

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“…Inhomogeneous broadening of the 5 D 0 -7 F 0 transition and the ease with which Sm 2 þ can be photoionised means that the samarium-doped material has been widely used in studies of persistent hole-burning [12]. The reverse process can be achieved with X-irradiation, that is Sm 3 þ can be reduced to Sm 2 þ , and this process has been proposed for applications in photoluminescence-detected X-ray storage phosphors [13], and in micro-beam radiation therapy dosimetry [14].…”

Section: Introductionmentioning

confidence: 98%

Sm2+ fluorescence and absorption in cubic BaCl2: Strong thermal crossover of fluorescence between 4f6 and 4f55d1 configurations

Dixie

Edgar

Reid

2012

Journal of Luminescence

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Section: Introductionmentioning

confidence: 98%

Sm2+ fluorescence and absorption in cubic BaCl2: Strong thermal crossover of fluorescence between 4f6 and 4f55d1 configurations

Dixie

Edgar

Reid

2012

Journal of Luminescence

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“…It is instructive to mention here that the latter fact does not necessarily mean that the AlN ceramic plate does not have sufficient sensitivity below 3 mGy, but it can be due to the sensitivity of our experimental readout setup. The measurement capability of small doses is especially important for personnel dosimetry or medical imaging applications, while a dosimeter capable of large doses may find some applications such as radiation therapy [23][24][25][26]. demonstrates an X-ray image taken on some electronic components using the SHAPAL ® AlN ceramic plate.…”

Section: Resultsmentioning

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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“…Such a fluorescence imaging plate may be of great interest for sub-micrometer imaging applications. (20) …”

Section: Discussionmentioning

confidence: 99%

Photochromism and Thermally and Optically Stimulated Luminescences of AlN Ceramic Plate for UV Sensing

2016

Sensors and Materials

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We have characterized AlN ceramic plates (SHAPAL ® , Tokuyama Corporation, Japan) for UV sensing applications. The SHAPAL ® AlN ceramic plate is a commercially available product used as a heat sink, but it shows photochromic effects and thermally and optically stimulated luminescences (TSL and OSL) after it is exposed to UV light. Upon UV exposure, a broad optical absorption band is induced in the UV-blue region (2.5-4.5 eV), and the color changes from gray to orange. A UVexposed AlN ceramic plate emits near UV light (~3.4 eV) upon thermal or optical stimulation. The TSL signal showed maximum intensity when heated to around 200 °C, whereas the OSL could be stimulated by light exposure over a wide spectral range from ~2 to 3 eV. The sensitivity of the photochromism, TSL, and OSL depended on the UV photon energy. Overall, these UV-induced effects were strongly pronounced for photon energies higher than 4.0 eV, but the photochromic effect could be seen for lower energies, though the signal was considerably smaller. The AlN ceramic plate could be used for UV sensing multiple times. The photochromic, TSL, and OSL signals could be erased by heat treatment, and the OSL signal could also be erased by exposure to low-energy light.

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Spatially resolved measurement of high doses in microbeam radiation therapy using samarium doped fluorophosphate glasses

Cited by 87 publications

References 16 publications

Sm2+ fluorescence and absorption in cubic BaCl2: Strong thermal crossover of fluorescence between 4f6 and 4f55d1 configurations

Sm2+ fluorescence and absorption in cubic BaCl2: Strong thermal crossover of fluorescence between 4f6 and 4f55d1 configurations

Aluminum Nitride Ceramic as an Optically Stimulable Luminescence Dosimeter Plate

Photochromism and Thermally and Optically Stimulated Luminescences of AlN Ceramic Plate for UV Sensing

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