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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 >Simulating the radial dose distribution for charged particles in water medium by a semi-empirical model: An analytical approach
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Simulating the radial dose distribution for charged particles in water medium by a semi-empirical model: An analytical approach

机译：半经验模型模拟水介质中带电粒子的径向剂量分布：分析方法

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A computational semi-empirical model based on electronic radiation damage to medium has been presented to simulate the radial dose distribution. An analytical approach was used to calculate the deposited energy in water per unit mass within a cylindrical shell of unit length around the ion path at a radial distance between r and r + dr, the so-called radial dose distribution, RDD. Detail steps were given and the final radial dose integration over the electron range between R-min and R-max was solved numerically using the Mid-Point Method. A validation for the present model was presented by integrating the RDD over all possible radial distances, r to yield the tabulated LET of the ion. The validation was presented for a range of proton ions of different energies. The RDD for heavy charged particles of proton, alpha, Carbon and Oxygen ions of different energies in liquid water were obtained. Good agreement between the present model and experimental, theoretical, and Monte Carlo (Geant4-DNA) data were obtained for all ions under investigations.
机译：已经提出了一种基于电子辐射损伤对培养基损伤的计算半经验模型来模拟径向剂量分布。用于在离子路径围绕R和R + DR之间的径向距离的单位长度围绕离子路径的圆柱形壳体内的单位质量在水中的沉积能量下的沉积能量。给出了细节步骤，并且使用中点法在数值上进行数值求解在R-min和r-max之间的电子范围内的最终径向剂量积分。通过将RDD集成在所有可能的径向距离，R以产生所示的放置的验证来提出本模型的验证。验证出现了一系列不同能量的质子离子。得到了液态水中不同能量的质子，α，碳和氧离子的重带电粒子的RDD。本模型与实验性，理论和蒙特卡罗（GEANT4-DNA）数据之间的良好一致性是在调查中的所有离子获得的。

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