Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 47, Issue 11, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/47/11/115602
Keywords
photoionization of ions; synchrotron radiation; inner-shell processes; photon-ion merged-beams experiments
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Funding
- DESY
- German ministry for education and research (BMBF) - 'Verbundforschung' funding scheme [05KS7RG1, 05KS7GU2, 05KS7KE1, 05KS7RF2, 05K10RG1, 05K10GUB, 05K10KEA, 05K10RF2]
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The photon-ion merged-beams technique has been employed at the new (P) under bar hoton-(I) under bar on spectrometer at (PE) under bar TRA III for measuring multiple photoionization of Xeq+ ( q = 1-5) ions. Total ionization cross sections have been obtained on an absolute scale for the dominant ionization reactions of the type hv + Xeq+ -> Xer+ + (q - r)e(-) with product charge states q + 2 <= r <= q + 5. Prominent ionization features are observed in the photon-energy range 650-750 eV, which are associated with excitation or ionization of an inner-shell 3d electron. Single-configuration Dirac-Fock calculations agree quantitatively with the experimental cross sections for non-resonant photoabsorption, but fail to reproduce all details of the measured ionization resonance structures.
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