- Conference date: 24-28 June 2002
- Location: Rome (Italy)
We have studied double K‐shell photoionization of Ne and Mo (Z = 10 and 42) at the Advanced Photon Source. Double K‐vacancy production in Ne was observed by recording the KK‐KLL Auger hypersatellite spectrum. Comparison is made with calculations using the multiconfiguration Dirac‐Fock method. For Mo, double K‐vacancy production was observed by recording the Kα, β fluorescence hypersatellite and satellite x rays in coincidence. From the intensities of the Auger or x‐ray hypersatellites relative to diagram lines, the probabilities for double K‐vacancy production relative to single K‐vacancies were determined. These results, along with reported measurements on other atoms, are compared with Z‐scaling calculations of the high‐energy limits of the double‐to‐single K‐shell photoionization ratio.
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