Absolute measurements of the bremsstrahlung double differential cross sections (DDCSs) for photons radiated at 90° generated by the collisions of 5–25 keV electrons and down to 1–2 keV photon energy with two thin targets C (Z = 6) and Al (Z = 13) are presented. A parallelized version of the PENELOPE Monte Carlo program has been used to correct the effects of electron multiple scattering and the backscattering from the target substrate on the experimental results. Comparisons between the experiments and the theories reveal some discrepancies between the measured data and the theoretical bremsstrahlung predictions.

中文翻译：

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通过 5-25 keV 电子撞击对 C 和 Al 原子的轫致辐射双微分截面进行绝对测量

由 5-25 keV 电子和低至 1-2 keV 光子能量与两个薄目标 C (Z = 6) 和 Al ( Z = 13) 呈现。PENELOPE Monte Carlo 程序的并行版本已用于校正电子多重散射和来自目标基板的背向散射对实验结果的影响。实验和理论之间的比较揭示了测量数据和理论韧致辐射预测之间的一些差异。