Laser Heating of Thermoluminescent Films: Dose Mapping Applied to Beta Dosimetry

Setzkorn, R.; Prévost, H.; Gasiot, J.; Christensen, Poul

doi:10.1093/oxfordjournals.rpd.a031767

Cited by 5 publications

(2 citation statements)

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“…Laser-heated thermoluminescence dosimetry was first demonstrated on thin layers of powdered ceramics [1], and the combination of thermoluminescence and heat-transfer issues for this have been analysed [2]. This has applications in medicine [3,4]. Laser heating of the sample is interesting for three reasons.…”

Section: Introductionmentioning

confidence: 99%

Dose deposition profiles from laser-heated thermoluminescence

Lawless¹,

Hui²,

Kui³

et al. 2004

J. Phys. D: Appl. Phys.

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We use CO2 laser-induced thermoluminescence to measure radiation dose deposition profiles in thin films. Films of various thicknesses, ranging from 10 to 90 µm, are deposited on a substrate and irradiated. The deposited dose is read out at a high heating rate so that strong signals can be obtained even from thin films. Our experiments use LiF films and 90Sr and 241Am radiation sources. This method allows nondestructive measurement of deposition profiles directly in thin solid films.

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Section: Introductionmentioning

confidence: 99%

Dose deposition profiles from laser-heated thermoluminescence

Lawless¹,

Hui²,

Kui³

et al. 2004

J. Phys. D: Appl. Phys.

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“…In some cases where high gradients of dose occur, such as around the dose build-up and target regions in external photon or electron radiotherapeutical beams, stereotactic radiosurgery beams, or around brachytherapy sources and applicators, where sub-millimeter resolution is required, the size (effective volume) of the detector may become a limiting factor. In such cases, apart from conventional 2-D radiography techniques using film dosimetry [2], some newer techniques, such as laser read-out TLD films [3] and radiochromic dye films [4] or 3-D dosimetric gels, read out with the NMR (Nuclear Magnetic Resonanse) method [5], are being introduced. While the required spatial resolution of the dose distribution measurement can then be achieved, the dose (or dose-rate) range of the detector, linearity of the detector response over that range and the spatial resolution of the detector have all to be carefully considered.…”

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confidence: 99%

CVD diamond wafers as large-area thermoluminescence detectors for measuring the spatial distribution of dose

Marczewska

Bilski

Olko

et al. 2003

phys. stat. sol. (a)

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PACS 78.60. Kn, 85.60.Gz The applicability of large-area CVD diamond wafers (diameter about 5 cm, thickness about 0.1 mm), read out as thermoluminescence (TL) detectors, for assessing two-dimensional (2-D) dose distribution over their area, was investigated. To obtain 2-D TL images, a special TL reader equipped with large-area planchet and a CCD camera instead of the usual PM tube was developed. Several 2-D TL images: of an alpha source (Am-241), a Ra-226 needle source and a Ru-106 ophthalmic applicator, were measured and high-resolution digital images obtained. Our preliminary results demonstrate the potential capability of large-area CVD diamond wafers, read out as TL detectors, in 2-D dosimetry for medical applications.

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