Abstract Measurements of entrance doses and extremity doses in mix fields are quite complex, particularly when it comes to neutron radiation. For this reason, films of transparent and flexible polymers loaded with luminescent materials sensitive to photons and neutrons were developed experimentally. However, there is a demand for optimizing the shape and arrangement of the crystals in these films. Using Monte Carlo simulations with the PHITS code, we simulated a geometry so that it would be possible to measure the dose deposited by the primary neutrons and by neutrons scattered backwards by a water phantom. We evaluated the sensitivity of the films loaded with MgB4O7 produced with different boron isotopes. We found that, in the case of a photon source, the energy deposited in the MgB4O7 particles comes from the photons that directly impact the film and that there was no significant difference in sensitivity for the different isotopes. However, using neutron beams, the water phantom is responsible for backscattering the neutrons that deposit the dose in the film produced with B-10, indicating that films can be used to detect albedo neutrons from an irradiated body and differentiate them from gamma irradiation.

中文翻译：

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装载有 MgB4O7 微粒的 PVC 薄膜的蒙特卡罗模拟以检测反照率中子

摘要 混合场中入口剂量和末端剂量的测量非常复杂，尤其是在涉及中子辐射时。出于这个原因，通过实验开发了负载有对光子和中子敏感的发光材料的透明和柔性聚合物薄膜。然而，需要优化这些薄膜中晶体的形状和排列。使用带有 PHITS 代码的蒙特卡罗模拟，我们模拟了一个几何形状，以便可以测量初级中子和由水幻影向后散射的中子沉积的剂量。我们评估了加载有不同硼同位素生产的 MgB4O7 的薄膜的灵敏度。我们发现，在光子源的情况下，沉积在 MgB4O7 粒子中的能量来自直接撞击薄膜的光子，不同同位素的灵敏度没有显着差异。然而，使用中子束，水体模型负责反向散射中子，这些中子在 B-10 产生的薄膜中沉积剂量，表明薄膜可用于检测来自受辐射体的反照率中子，并将它们与伽马辐射区分开来。