Journal
PHYSICAL REVIEW A
Volume 104, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.104.013114
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Funding
- Russian Foundation for Basic Research (RFBR) [19-29-12015]
- Helmholtz Virtual Institute [VI419]
- Deutsche Forschungsgemeinschaft through the Cluster of Excellence Advanced Imaging of Matter [EXC 2056, 390715994]
- Vetenskapsradet [2019-03470]
- Swedish Research Council [2019-03470] Funding Source: Swedish Research Council
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Through theoretical study, we found that the relative phase shift of coherent x-ray double pulses can result in a modulation of spectra that is shifted with respect to the phase oscillation comb. This shift is determined by the dynamics of the process defined by the interplay of delay time, pulse width, detuning, and core-excited state lifetime.
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.
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