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Dynamical phase shift in x-ray absorption and ionization spectra by two delayed x-ray laser fields
Physical Review A ( IF 2.9 ) Pub Date : 2021-07-26 , DOI: 10.1103/physreva.104.013114
Viktoriia Savchenko , Faris Gel'mukhanov , Tim Laarmann , Sergey P. Polyutov , Victor Kimberg

We study theoretically x-ray absorption and ionization spectra of an atom or molecule by two coherent x-ray pulses that show a relative phase shift resulting in a time delay of the pulse envelopes. We demonstrate that the phase modulation of the spectra is shifted with respect to the phase oscillation comb of the x-ray double pulse. The reason for this shift is the dynamics of the process defined by the interplay of the delay time, the pulse width, the detuning, and the lifetime of the core-excited state.

中文翻译:

两个延迟 X 射线激光场在 X 射线吸收和电离光谱中的动态相移

我们通过两个相干 X 射线脉冲从理论上研究原子或分子的 X 射线吸收和电离光谱,这些 X 射线脉冲显示出导致脉冲包络时间延迟的相对相移。我们证明了光谱的相位调制相对于 x 射线双脉冲的相位振荡梳发生了偏移。这种转变的原因是由延迟时间、脉冲宽度、失谐和核心激发状态的寿命的相互作用所定义的过程的动力学。
更新日期:2021-07-26
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