论文标题
离子极化在多个顺序电离中的演变：一般方程式和一个说明性示例
Evolution of the ionic polarization in multiple sequential ionization: general equations and an illustrative example
论文作者
论文摘要
现代的自由电子激光器会产生高度强烈的极化辐射，从而启动一系列电离和衰减事件。它们的概率取决于每个状态作为时间的函数的极化。它的完整会计受到可以通过各种方式形成国家的事实的限制。在这里，我们介绍了完全解释辐射极化并根据统计张量法配制的人群的速率方程。为了说明我们的方法，我们从理论上考虑了通过强烈的极端紫外线飞秒脉冲将K KIRYPTON的顺序化，用于在3D-Shell激发阈值以下的光子能量。给出了各种光子通量的离子产量，光电光谱和离子极化的计算，并讨论了极化的作用。
The modern Free-Electron-Lasers generate a highly intense polarized radiation which initiate a sequence of ionization and decay events. Their probability depends on the polarization of each state as function of time. Its complete accounting is limited by the fact that a state can be formed in various ways. Here we present the equivalent of rate equations for population that completely accounts polarization of radiation and formulated in terms of the statistical tensors. To illustrate our approach we theoretically consider sequential photoionization of krypton by an intense extreme ultraviolet femtosecond pulse for the photon energies below the 3d-shell excitation threshold. The calculations of the ion yields, photoelectron spectra and ionic polarization for various photon fluence are presented and role of polarization is discussed.
