1994
DOI: 10.1103/physreva.49.3104
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Configuration interaction in argonKLresonances

Abstract: Curious "doublet" resonances in the KL double photoexcitation spectrum of argon are explained as a strong admixture of 3d' excited states to the principal [1s2p]4p excitation. A simulated "ab initio" EL photoabsorption spectrum including shake-up and shake-off contributions agrees well with the experimental data.

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Cited by 19 publications
(11 citation statements)
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“…XFEL studies are expected to shed light on the formation of DCH preedge states on third and higher row elements, which are characterized by very small cross-sections, 29 making their experimental observation using SR impracticable. Regarding the neutrally excited DCH states of the form K À2 VV 0 , where both core electrons have been excited to the V and V 0 unoccupied molecular/Rydberg orbitals, though such states are known to be accessible through X-ray absorption spectroscopy (XAS), 30,31 yet no experimental evidence on their Auger decay is available to date. Finally, another interesting feature of DCH spectroscopy can be found in the probe of the induced nuclear dynamics, upon the formation of a double inner-shell vacancy.…”
Section: Introductionmentioning
confidence: 99%
“…XFEL studies are expected to shed light on the formation of DCH preedge states on third and higher row elements, which are characterized by very small cross-sections, 29 making their experimental observation using SR impracticable. Regarding the neutrally excited DCH states of the form K À2 VV 0 , where both core electrons have been excited to the V and V 0 unoccupied molecular/Rydberg orbitals, though such states are known to be accessible through X-ray absorption spectroscopy (XAS), 30,31 yet no experimental evidence on their Auger decay is available to date. Finally, another interesting feature of DCH spectroscopy can be found in the probe of the induced nuclear dynamics, upon the formation of a double inner-shell vacancy.…”
Section: Introductionmentioning
confidence: 99%
“…For a definite assignment of MPE features, especially in complex cases, a reconstruction of the experimental cross section by a theoretical model is required. Good results have been obtained for some isolated groups of excitations in noble gas spectra [8,[14][15][16][17][18]. The theoretical treatment, however, has been uniquely adapted to each case, allowing little generalization.…”
Section: Introductionmentioning
confidence: 99%
“…However, until now, direct observations of satellites in conventional photoelectron spectroscopy have been limited to cases where only inner or outer valence electrons are involved in the shake-up process. Core-hole photoemission satellites (i.e., DCH states) have been observed only indirectly using photoabsorption [15,16] or x-ray emission [17,18], in coincidence studies [2][3][4], or in multiphoton experiments [6,7]. Specifically for argon, three early photoabsorption studies focused on the 1s −1 2l −1 4p 2 doubly excited states [15,16,19].…”
mentioning
confidence: 99%