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State-of-the-art Argon KLL Auger spectra measured using photon energies of hν = 3216 eV and 3400 eV are presented along with an Ar [1s] photoelectron spectrum (squared brackets indicate holes in the respective orbital). The two different photon energies used for measuring the Auger spectra allow distinguishing between the shake transitions during the Auger decay and the Auger transitions of the photoelectron satellites. A complete assignment of satellite transitions is provided, partially baseed on configuration interaction calculations. In addition, Ar [1s3(s, p)]nl → [2p(D2)] transitions are observed, which can be explained by knock-down transitions leading to a direct exchange of angular momenta between the excited electron and the Auger electron. The lifetime broadenings of the Ar [2s] single core-hole state and the [2s2] as well as [2s2p] double core-hole states are also determined, confirming previously observed trends for double core-hole states. PACS numbers: 33.15.Ry, 33.60.+q, 33.80.Eh, 33.20.Rm Electronic address: puettner@physik.fu-berlin.de present address: Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, OX1 3PU, UK present address: Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 S Cass Avenue, Lemont, IL 60439, USA

physical review. a/physical review, a

Argon <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>K</mml:mi><mml:mi>L</mml:mi><mml:mi>L</mml:mi></mml:mrow></mml:math> Auger spectrum: Initial states, core-hole lifetimes, shake, and knock-down processes

Argon KLL Auger spectrum: Initial states, core-hole lifetimes, shake, and knock-down processes