| 1. |
- Jankala, K., et al.
(författare)
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Inner-shell 2p photoionization and Auger decay of atomic silicon
- 2008
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Ingår i: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 77:6
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Tidskriftsartikel (refereegranskat)abstract
- A detailed experiment on 2p photoionization and subsequent Auger decay of atomic silicon is presented. Fine-structure-resolved photoelectron and Auger electron spectra are interpreted with the aid of large-scale multiconfiguration calculations. Energy separation and the relative cross sections of the 2p ionized fine-structure states of Si+ are given. The complete 2p Auger electron spectrum of Si is interpreted, and the intensity distribution to individual doubly ionized final states is studied.
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| 2. |
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| 3. |
- Patanen, M., et al.
(författare)
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High-resolution study of K 3p photoabsorption and resonant Auger decay in KF
- 2009
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Ingår i: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 80:1
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Tidskriftsartikel (refereegranskat)abstract
- High-resolution (K3p sigma and pi)->sigma absorption spectrum of KF in the photon energy range of 18.2-19.4 eV was measured at the new FINEST beamline branch on the I3 beamline on MAX III. The experimental spectrum is presented and interpreted using nonrelativistic ab initio molecular calculations corrected with perturbation theory treatment to account for spin-orbit interaction. Resonant Auger decay recorded at the strongest resonances is also presented and reproduced by theoretical calculations. Also a brief introduction to the FINEST beamline branch is presented.
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| 4. |
- Patanen, M., et al.
(författare)
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Strong molecular field effects in Auger decay of the potassium 2p core-hole state in molecular KCl, KBr and KI
- 2008
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Ingår i: Journal of Physics B: Atomic, Molecular and Optical Physics. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 41:21
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Tidskriftsartikel (refereegranskat)abstract
- The K 2p photoionization and subsequent LMM Auger decay have been studied for molecular gas-phase KCl, KBr and KI. The detected manifold spectral structure of the Auger electron spectrum of KCl has been interpreted to originate from strong molecular field effects. This indicates that Auger decay on potassium side of originally very ionic molecules creates inner-shell hole states with a strong molecular character.
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| 5. |
- Sankari, R, et al.
(författare)
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High resolution O 1s photoelectron shake-up satellite spectrum of H2O
- 2006
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Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614. ; 422:1-3, s. 51-57
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Tidskriftsartikel (refereegranskat)abstract
- The O 1s photoelectron satellite spectrum of water has been recorded with high resolution and some vibrational structures were detected. The electronic and vibrational structures observed in the experimental spectrum are well interpreted with the aid of the molecular ab initio calculations based on the symmetry adapted cluster-configuration interaction (SAC-CI) method. (c) 2006 Elsevier B.V. All rights reserved.
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| 6. |
- Schulz, J., et al.
(författare)
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5p photoemission from laser excited cesium atoms
- 2006
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Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 73:6
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Tidskriftsartikel (refereegranskat)abstract
- Fine-structure resolved 5p photoemission spectra of Cs in the ground state and after laser excitation into the [Xe]6p P-2(1/2) and 6p(2)P(3/2) states have been studied. The 5p(5)6p final states have been reached by the 5p(6)6s -> 5p(5)6p conjugate shakeup process from ground-state atoms as well as by direct photoemission from laser-excited atoms. The laser-excited spectra can be well described with calculations based on the jK-coupling model. Calculations based on a multiconfiguration Dirac-Fock approach have been performed to investigate the deviations created by intermediate coupling from the pure jK-coupling scheme.
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| 7. |
- Schulz, J., et al.
(författare)
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A method to characterize electronic states of 4s ionized Rb by combined laser and synchrotron spectroscopy
- 2008
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Ingår i: Europhysics letters. - : IOP Publishing. - 0295-5075 .- 1286-4854. ; 83:5, s. 53001-
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Tidskriftsartikel (refereegranskat)abstract
- Photoelectron studies of laser-excited atomic states can reveal more information about the final ionic states than ground-state photoemission. The possibility to tune the laser to distinct fine-structure sub-states of the excited states allows to select specific angular-momentum couplings of the valence electron that are conserved during photoemission. In the 4s photoemission of laser-excited rubidium we use this method to determine the final-state energies and widths of doubly excited ionic states and characterize the angular-momentum couplings.
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| 8. |
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| 9. |
- Schulz, Joachim, et al.
(författare)
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Characterization of weakly excited final states by shakedown spectroscopy of laser-excited potassium
- 2006
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Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 74:1, s. 012705-
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Tidskriftsartikel (refereegranskat)abstract
- 3p shakedown spectra of laser excited potassium atoms as well as direct 3p photoemission of ground state potassium have been studied. These two excitation schemes lead to the same final states and thereby provide a good basis for a detailed study of the 3p(5)(4s3d)(1) configurations of singly ionized potassium and the photoemission processes leading to these configurations. The comparison of direct photoemission from the ground state and conjugate shakedown spectra from 4p(1/2) laser excited potassium made it possible to experimentally determine the character of final states that are only weakly excited in the direct photoemission but have a much higher relative intensity in the shakedown spectrum. Based on considerations of angular momentum and parity conservation the excitation scheme of the final states can be understood.
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| 10. |
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