Journal
PHYSICAL REVIEW A
Volume 87, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.87.043409
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Funding
- Swedish Research Council (VR)
- Goran Gustafsson Foundation (UU/KTH)
- Knut and Alice Wallenberg Foundation, Sweden
- European Community-Research Infrastructure Action under the FP6 Structuring the European Research AreaProgramme (through the Integrated Infrastructure Initiative Integrating Activity on Synchrotron and Free Electron Laser Science) [R II 3-CT-2004-506008]
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Single-photon ionization leading to two vacancies in the 2p subshell of argon is investigated experimentally using the photoelectron time-of-flight magnetic bottle coincidence technique. Three peaks corresponding to the P-3, D-1, and S-1 states of the dication are found in the ionization energy range 535 to 562 eV. Multiconfigurational Dirac-Fock calculations were performed to estimate the single-photon double-ionization cross sections. Reasonable agreement between the measured and simulated spectra is found if single and double excitations are taken into account in the wave-function expansion. DOI: 10.1103/PhysRevA.87.043409
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