Webb S
Br J Radiol. 1979 Dec;52(624):962-7. doi: 10.1259/0007-1285-52-624-962.
Monte Carlo techniques are used to generate the distribution of absorbed dose in the vicinity of an interface between two media. Computer-generated distributions for absorbers comprising the media carbon-copper, water-aluminium and aluminium-water are presented. The features of the distributions in regions of electron equilibrium and non-equilibrium, in particular finite discontinuities at the boundaries and subsequent build up or build down, are discussed both qualitatively and quantitatively. The difficulties inherent in interpreting ionization measurements in the neighbourhood of interfaces are outlined.
蒙特卡罗技术用于生成两种介质界面附近吸收剂量的分布。给出了由碳 - 铜、水 - 铝和铝 - 水介质组成的吸收体的计算机生成分布。对电子平衡和非平衡区域中分布的特征，特别是边界处的有限不连续性以及随后的剂量积累或剂量下降，进行了定性和定量讨论。概述了在界面附近解释电离测量结果时固有的困难。
