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Spectra Of Photoneutrons Produced By High-energy X-ray Radiotherapy Linacs

机译:高能X射线放射直线加速器产生的光中子光谱

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Spectral fluence of photoneutrons generated in the head of the radiotherapeutic linac Varian 2100 C/D was measured by means of the Bonner spheres spectrometer whose active detector of thermal neutrons was replaced by a track detector, i.e. a sandwich of four CR-39s with the boron radiator inserted between them. Measurements with different collimator settings showed that the fluence of photoneutrons was higher for the more open collimator.
机译:放射治疗性直线加速器Varian 2100 C / D头中产生的光中子的光谱通量通过Bonner球体光谱仪进行测量,该仪的热中子的有源探测器被轨道探测器代替,即四个CR-39与硼的三明治散热器插入它们之间。使用不同的准直仪设置进行的测量表明,对于更开放的准直仪,光中子的通量更高。

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