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Creators/Authors contains: "Han, Seunghwoi"

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  1. ; ; (, Sensors)
    Electron correlation describes the interaction between electrons in a multi-electron system. It plays an important role in determining the speed of relaxation of atoms and molecules excited by XUV/X-ray pulses, such as the argon decay rate. Most research on electron correlation has centered on the role of correlation in stationary states. A time-resolved experimental study of electron correlation is a grand challenge due to the required temporal resolution and photon energy. In this research, we investigated Auger decay in argon using 200-attosecond X-ray pulses reaching the carbon K-edge. At such a high photon energy, ionization occurs not only from the outer most levels (3s and 3p), but also from the 2p core shells. We have measured a lifetime of 4.9 fs of L-shell vacancies of argon in pump–probe experiments with a home-built high-resolution time-of-flight spectrometer. 
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  2. ; ; ; ; ; ; ; ; ; ; et al (, The International Conference on Ultrafast Phenomena (UP) 2022)
    Half-cycle oscillation is observed in transient absorption spectra of N2O at NKedge (400 eV) irradiated by intense IR pulses, which is attributed to tunneling ionization of core excited states by intensive TDSE-based simulation. 
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  3. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Research)
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  4. ; ; ; ; ; ; ; ; (, Nature Communications)
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  5. ; ; ; ; ; ; ; ; ; (, Optics Express)
  6. ; ; ; ; ; ; ; ; ; (, Optica)
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