论文标题
通过K-shell激发和电离对氧阴离子的多次光检查：直接双结构过程以及随后的去激发级联
Multiple Photodetachment of Oxygen Anions via K-Shell Excitation and Ionization: Direct Double-Detachment Processes and Subsequent Deexcitation Cascades
论文作者
论文摘要
使用光子离子合并的梁技术在同步子光源上测量了525-1500 EV的525-1500 eV的氧阴离子的M倍光检查（M = 2-5）的实验横截面。测得的横截面表现出直接双脱的明确特征，包括双孔孔的创建。双度横截面随光子能量的函数的形状与Pattard的[J.物理。 B 35，L207（2002）]经验缩放定律。我们还遵循了复杂的去激发级联反应，该级联反应随后通过系统的大规模级联计算而演变为初始的双重性事件。由此产生的理论产品电荷分布与实验发现非常吻合。
Experimental cross sections for m-fold photodetachment (m=2-5) of oxygen anions via K-shell excitation and ionization were measured in the photon-energy range of 525-1500 eV using the photon-ion merged-beams technique at a synchrotron light source. The measured cross sections exhibit clear signatures of direct double detachment, including double K-hole creation. The shapes of the double-detachment cross sections as a function of photon energy are in accord with Pattard's [J. Phys. B 35, L207 (2002)] empirical scaling law. We have also followed the complex deexcitation cascades that evolve subsequently to the initial double-detachment events by systematic large-scale cascade calculations. The resulting theoretical product charge-state distributions are in good agreement with the experimental findings.
