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/

本描述提供了一种针对X射线管发射的轫致辐射和特征X射线的能量和角分布的分析模型，该模型适用于钨和钼靶。该模型包含光子质量衰减系数、CSDA范围、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，还包括蒙特卡洛计算的（PENELOPE）电子穿透数据，描述了在厚X射线靶中电子的深度、能量和角分布。特征X射线的发射通过先前开发的模型进行考虑，该模型包括蒙特卡洛计算的X射线荧光深度分布（见下述数据集相关链接）。上述模型的Python实现已包含在以下工具包中：https://bitbucket.org/spekpy/spekpy_release。此工具包的一些关键特性也通过基于Web的图形用户界面（GUI）提供：https://spekpy.smile.ki.se/。