Double photoionization into double core-hole states in Xe |
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Authors: | Hikosaka Y Lablanquie P Penent F Kaneyasu T Shigemasa E Eland J H D Aoto T Ito K |
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Institution: | UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan. |
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Abstract: | Double photoionization (DPI) leading to double core-hole states of Xe2+ 4d(-2) has been studied using a magnetic bottle time-of-flight spectrometer. The assignments of the Xe2+ 4d(-2) states are confirmed by the Auger lines extracted from fourfold coincidences including two photoelectrons and two Auger electrons. It is estimated that the core-core DPI into Xe2+ 4d(-2) at a photon energy of 301.6 eV has a favored cross section of about 0.3 MB. The intense core-core DPI is due to mixing of the 4d(-2) continuum with the 4p single photoionization, which is manifested in the relative intensities of the Xe2+ 4d(-2) components. |
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