The modified Boltzmann-Chandrasekhar equation of transport for photons is the proper framework for describing the photon radiation field with a complete description of the polarization state. The characterization of the radiation field requires a detailed knowledge of the interactions of photons with mater and comprises also the contribution of the secondary electrons to the photon field through mechanisms like inner impact ionization and bremsstrahlung. It will be shown a solution obtained without the need of solving the coupled transport electrons-photons. With all these interactions, the theoretical characterization of the X-ray spectrum of emission after excitation with a source of X-rays can be straightforwardly obtained from the albedo solution to the equation. In this work it will be privileged a Monte Carlo (MC) solution. However, this solution is still far from an experimental measurement modified by the radiation detection devices, comprised the pulse electronics. In this work we put together a MC simulation able to get a detailed transport solution and a complete characterization of the contributions of the detection chain. It is discussed the influence of the single contributions and how they combine to make that a simulated X-ray spectrum matches well a real measurement.

中文翻译：

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了解 X 射线源激发后的 X 射线发射光谱：从理论到实验

修正的玻尔兹曼-钱德拉塞卡光子输运方程是描述光子辐射场以及完整描述偏振态的正确框架。辐射场的表征需要详细了解光子与物质的相互作用，并且还包括二次电子通过内碰撞电离和轫致辐射等机制对光子场的贡献。将显示无需求解耦合传输电子-光子即可获得的解决方案。通过所有这些相互作用，可以从方程的反照率解中直接获得 X 射线源激发后发射的 X 射线光谱的理论表征。在这项工作中，我们将优先采用蒙特卡罗 (MC) 解决方案。然而，该解决方案距离由脉冲电子器件组成的辐射检测装置修改的实验测量还很远。在这项工作中，我们整合了 MC 模拟，能够获得详细的传输解决方案和检测链贡献的完整表征。讨论了单一贡献的影响以及它们如何结合起来使模拟的 X 射线光谱与实际测量结果良好匹配。