论文标题
Xe与attosecond Xuv脉冲相互作用的顺序单光子和直接两光子吸收过程
Sequential single-photon and direct two-photon absorption processes for Xe interacting with attosecond XUV pulses
论文作者
论文摘要
我们研究了Xe与分离的Xuv脉冲的相互作用。具体而言，我们计算离子产量并确定导致离子电荷状态形成的途径，最高为Xe $^{5+} $。为此，在我们的配方中，我们解释了单光子的吸收，顺序多光子吸收，直接的两光子吸收，单螺旋螺旋杆腐烂和摇动。我们将离子产量和离子收益率比的结果与93 eV和115 eV的XUV脉冲获得的最新实验结果进行了比较。特别是，我们研究了两个单光子电离过程的序列在Xe $^{4+} $的形成中发挥作用。我们发现这两个过程中的每个过程都将核心电子电离，从而导致形成双核孔状态。值得注意的是，我们发现Xe $^{5+} $的形成涉及直接的两光吸收过程和总共三个光子的吸收。
We investigate the interaction of Xe with isolated attosecond XUV pulses. Specifically, we calculate the ion yields and determine the pathways leading to the formation of ionic charged states up to Xe$^{5+}$. To do so, in our formulation we account for single-photon absorption, sequential multi-photon absorption, direct two-photon absorption, single and double Auger decays, and shake-off. We compare our results for the ion yields and for ion yield ratios with recent experimental results obtained for 93 eV and 115 eV attosecond XUV pulses. In particular, we investigate the role that a sequence of two single-photon ionization processes plays in the formation of Xe$^{4+}$. We find that each one of these two processes ionizes a core electron and thus leads to the formation of a double core-hole state. Remarkably, we find that the formation of Xe$^{5+}$ involves a direct two-photon absorption process and the absorption of a total of three photons.
