MATLAB implementation of an analytical model for the emission of x rays from an x-ray tube

An analytical model for the energy and angular distribution of bremsstrahlung and characteristic x rays emitted from an x-ray tube is provided for tungsten and molybdenum targets. The model includes photon mass attenuation coefficients, CSDA ranges, NIST bremsstrahlung cross sections, and bremsstrahlung shape functions extracted from the PENELOPE [v. 2014] materials database. Also included are Monte Carlo-calculated (PENELOPE) electron penetration data, describing the depth, energy, and angular distribution of electrons in thick x-ray targets. The emission of characteristic x rays is taken into account using a previously developed model, which includes Monte Carlo-calculated depth distributions of x-ray fluorescence (see the related link to dataset below). A Python implementation of the above model has been included in the following toolkit: https://bitbucket.org/spekpy/spekpy_release Some of the key features of this toolkit are also available through a web-based graphical user interface (GUI): https://spekpy.smile.ki.se/

本数据集提供了一种适配X射线管（x-ray tube）中钨靶与钼靶（tungsten and molybdenum targets）的解析模型，用于描述该靶材下轫致辐射（bremsstrahlung）与特征X射线（characteristic x rays）的能量及角分布。该模型涵盖光子质量衰减系数（photon mass attenuation coefficients）、连续慢化近似（CSDA）射程（CSDA ranges）、美国国家标准与技术研究院（National Institute of Standards and Technology, NIST）轫致辐射截面，以及从PENELOPE [v. 2014] 材料数据库中提取的轫致辐射形状函数。此外，模型还纳入了经PENELOPE程序进行蒙特卡罗（Monte Carlo）计算得到的电子穿透数据，用于描述厚X射线靶材内电子的深度分布、能量分布与角分布。特征X射线的辐射过程已通过先前开发的模型进行考量，该模型包含了X射线荧光（x-ray fluorescence）的蒙特卡罗计算深度分布（详见下方数据集相关链接）。上述模型的Python（Python）实现已集成至如下工具包中：https://bitbucket.org/spekpy/spekpy_release。该工具包的部分核心功能还可通过基于网页的图形用户界面（graphical user interface, GUI）访问：https://spekpy.smile.ki.se/