Characteristics of a beam-shaping assembly that utilizes photo-neutrons from irradiation of a tungsten target by electrons from an accelerator were examined to produce a beam of neutrons suitable for boron neutron capture therapy. The epithermal neutron flux per kilowatt of electron-beam power almost increased to a maximum as the energy of the initial electrons was increased to 42.5 MeV, but the fast-neutron dose and the photon dose per epithermal neutron hardly changed on varying the energy of the initial electrons.

中文翻译：

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基于蒙特卡洛模拟的基于电子线性加速器的中子源，用于硼中子俘获治疗。

检验了光束整形组件的特性，该组件利用来自加速器的电子对钨靶进行辐照而产生的光中子，以产生适合于硼中子捕获疗法的中子束。随着初始电子的能量增加到42.5 MeV，每千瓦电子束功率的超热中子通量几乎增加到最大值，但是每个超热中子的快中子剂量和光子剂量几乎不会随着改变电子的能量而改变。初始电子。