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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Review of doped silica glass optical fibre: Their TL properties and potential applications in radiation therapy dosimetry
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Review of doped silica glass optical fibre: Their TL properties and potential applications in radiation therapy dosimetry

机译：掺杂二氧化硅玻璃光纤的综述：其TL性能和放射治疗剂量测定中的潜在应用

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摘要

Review is made of dosimetric studies of Ge-doped SiO2 telecommunication fibre as a 1-D thermoluminescence (TL) system for therapeutic applications. To-date, the response of these fibres has been investigated for UV sources, superficial X-ray beam therapy facilities, a synchrotron microbeam facility, electron linear accelerators, protons, neutrons and alpha particles, covering the energy range from a few eV to several MeV. Dosimetric characteristics include, reproducibility, fading, dose response, reciprocity between TL yield and dose-rate and energy dependence. The fibres produce a flat response to fixed photon and electron doses to within better than 3% of the mean TL distribution. Irradiated Ge-doped SiO2 optical fibres show limited signal fading, with an average loss of TL signal of ~0.4% per day. In terms of dose response, Ge-doped SiO2 optical fibres have been shown to provide linearity to x and electron doses, from a fraction of 1Gy up to 2kGy. The dosimeters have also been used in measuring photoelectron generation from iodinated contrast media; TL yields being some 60% greater in the presence of iodine than in its absence. The review is accompanied by previously unpublished data.
机译：回顾是GE掺杂SiO2电信纤维的剂量测定作为治疗应用的1-D热致发光（TL）系统。迄今为止，已经研究了紫外线源，浅表X射线束治疗设施，同步射流微观设施，电子线性加速器，质子，中子和α粒子的响应，覆盖了几个EV至几个的能量范围Mev。剂量测量特性包括，再现性，衰​​落，剂量反应，T1产量和剂量率和能量依赖之间的互核性。纤维对固定光子和电子剂量产生平坦的响应，以优于平均TL分布的3％。辐照的GE掺杂的SiO2光纤显示出有限的信号衰落，平均损失为每天〜0.4％的T1信号。就剂量响应而言，已示出Ge掺杂的SiO 2光纤，从X和电子剂量提供线性度，从一小部分到2kgy。剂量计也已用于测量从碘化造影剂的光电子产生;在碘存在的情况下，T1在碘存在下约为60％。审查伴随着以前未发布的数据。

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