Attosecond electronic dynamics of core-excited states of N2O in the soft x-ray region
Attosecond electronic dynamics of core-excited states of N2O in the soft x-ray region
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软 X 射线区域 N2O 核心激发态的阿秒电子动力学
DOI：
10.1103/physrevresearch.3.043222
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发表时间：
2021
影响因子：
4.2
通讯作者：
Olsen, Jeppe
中科院分区：
文献类型：
--
作者：
Saito, Nariyuki;Douguet, Nicolas;Sannohe, Hiroki;Ishii, Nobuhisa;Kanai, Teruto;Wu, Yi;Chew, Andrew;Han, Seunghwoi;Schneider, Barry I.;Olsen, Jeppe
本文采用阿秒软x射线脉冲和重叠强飞秒红外脉冲对边缘（400 eV）的瞬态吸收光谱进行了实验和理论结合研究。我们的实验表明，中性的核心激发态的隧道电离引起吸收信号中显著的半周期振荡。此外，我们观察到由于隧穿电离导致的信号延迟增加，从而使我们能够实时跟踪隧穿过程。我们已经开发了理论模型，使我们能够解释和再现实验数据的主要趋势。
We present a combined experimental and theoretical study of the transient absorption spectroscopy ofat the Nedge (400 eV) by employing an attosecond soft x-ray pulse and an overlapping intense femtosecond infrared pulse. Our experiment demonstrates that tunnel ionization of the core-excited states of neutralcauses prominent half-cycle oscillations in the absorption signal. In addition, we observe the appearance of thesignal with increasing delay as a result of the tunneling ionization of, thereby allowing us to follow the tunneling process in real time. We have developed theoretical models that allow us to interpret and reproduce the main trends of the experimental data.