Journal
PHYSICAL REVIEW A
Volume 106, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.106.043117
Keywords
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Funding
- Hellenic Foundation for Research and Innovation (HFRI)
- General Secretariat for Research and Technology (GSRT) [645, NEA-APS HFRI-FM17-3173]
- H2020 project IMPULSE [GA 871161]
- ELI-ALPS Project [GINOP-2.3.6-15-2015-00001]
- European Union
- European Regional Development Fund
- National Research, Development and Innovation Office of Hungary [2020-1.2.4-TT-IPARI-2021-00018]
- Max Planck Society within the framework of the Max Planck Fellow program
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Scientific User Facilities Division
- Deutsche Forschungsgemeinschaft [429805582]
- Bundesministerium fir Bildung und Forschung [05K19VF1]
- Irish Research Council under the Govt PG Scholarship [GOIPG/2018/1070]
- ELI-ALPS team during the experimental runs
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This study investigates the double XUV-photon double ionization of Ne induced by an intense few-pulse attosecond train experimentally and theoretically. The results show that a total pulse energy generated in argon in conjunction with high-reflectivity optics in the XUV region allows the observation of Ne's doubly charged state induced by 40 eV central XUV-photon energies. The theoretical study using second-order time-dependent perturbation theory equations of motion provides insights into the interaction of the intense attosecond pulse train with Ne.
Two-XUV-photon double ionization of Ne, induced by an intense few-pulse attosecond train with a -4 fs envelope duration is investigated experimentally and theoretically. The experiment is performed at ELI-ALPS (Extreme Light Infrastructure Attosecond Light Pulse Source) utilizing the recently constructed 10 Hz gas phase high-order harmonic generation SYLOS GHHG-COMPACT beamline. A total pulse energy up to -1 mu J generated in argon in conjunction with high-reflectivity optics in the XUV region allowed the observation of the doubly charged state of Ne induced by 40 eV central XUV-photon energies. The interaction of the intense attosecond pulse train with Ne is also theoretically studied via second-order time-dependent perturbation theory equations of motion. The results of this work, combined with the feasibility of conducting XUV-pump-XUV-probe experiments, constitute a powerful tool for many potential applications. Those include attosecond pulse metrology as well as time-resolved investigations of the dynamics underlying direct and sequential double ionization and their electron correlation effects.
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