发表机构
Instituto de Astronomía y Física del Espacio, CONICET and Universidad de Buenos Aires（太空天体物理研究所，阿根廷国家科学研究委员会与布宜诺斯艾利斯大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文在CDW-EIS模型下计算了裸离子和反质子引起的原子电离截面，并开发了神经网络替代模型CDWEIS-NN，以扩展数据库覆盖范围，结果与实验吻合良好。
AI 中文摘要
我们提出了在连续扭曲波-程函初始态（CDW-EIS）模型框架内，对裸离子和反质子引起的原子电离进行的从头计算。数据集涵盖了从H到Kr的原子靶，受到宽范围电荷的裸离子和反质子的撞击。特别关注周期表中第3和第4周期的元素，这些元素与颜料分析和重要技术材料相关。由此得到的亚壳层分辨的总电离截面通过在线存储库公开提供，覆盖了宽范围的弹体-靶系统、占据的初始亚壳层和弹体速度。我们分析了截面的系统趋势，包括它们对弹体电荷和速度的依赖性、束缚能标度以及质子和反质子撞击中的电荷符号效应。为了扩展数据库的实际覆盖范围，我们还开发了一个神经网络替代模型CDWEIS-NN，该模型在弹体电荷$|Z_\text{P}|\tleq 8$的数据库子集上训练。该网络将CDW-EIS结果插值到额外的弹体-靶系统和撞击能量，以令人满意的精度再现了留出法CDW-EIS计算和本工作中考虑的实验基准。
英文摘要
We present \textit{ab initio} calculations of atomic ionization by bare ions and antiprotons within the continuum distorted-wave eikonal initial-state (CDW-EIS) model. The dataset covers atomic targets from H to Kr, impacted by bare ions over a broad range of projectile charges and by antiprotons. Particular attention is given to elements in periods 3 and 4 of the periodic table, which are relevant to pigment analysis and technologically important materials. The resulting subshell-resolved total ionization cross sections are made openly available through an online repository covering a broad range of projectile--target systems, occupied initial subshells, and projectile velocities. We analyze systematic trends in the cross sections, including their dependence on projectile charge and velocity, binding-energy scaling, and charge-sign effects in proton and antiproton impact. To extend the practical coverage of the database, we also develop a neural-network surrogate, CDWEIS-NN, trained on the subset of the database with projectile charge $|Z_\mathrm{P}|\leq 8$. The network interpolates the CDW-EIS results to additional projectile--target systems and impact energies, reproducing both held-out CDW-EIS calculations and the experimental benchmarks considered in this work with satisfactory accuracy.
