Conjugate photoelectron recapture peaks in the high resolution Auger electron spectra following near-threshold Ar 2p photoionization
| Autor: | Satoshi Kosugi, F. Hosseini, Maria Novella Piancastelli, Kenji Ito, Fumihiro Koike, John D. Bozek, Tatiana Marchenko, M. Simon, Emma Sokell, Yoshiro Azuma, Oksana Travnikova, J. Martins |
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| Přispěvatelé: | Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
[PHYS]Physics [physics] Auger electron spectroscopy 010304 chemical physics Auger effect Photoionization Condensed Matter Physics 01 natural sciences Electron spectroscopy Atomic and Molecular Physics and Optics Auger Photoexcitation symbols.namesake Excited state 0103 physical sciences symbols Rydberg formula Atomic physics 010306 general physics ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Physics B: Atomic, Molecular and Optical Physics Journal of Physics B: Atomic, Molecular and Optical Physics, IOP Publishing, 2020, 53 (12), pp.125001. ⟨10.1088/1361-6455/ab7fc1⟩ |
| ISSN: | 0953-4075 1361-6455 |
| DOI: | 10.1088/1361-6455/ab7fc1⟩ |
| Popis: | We have observed formation of Rydberg series superimposed on the Ar (L3M2,3M2,3) Auger electron spectral profile with photoexcitation just above the 2p-13/2 photoionization threshold. This is due to the recapture of photoelectrons induced by post-collision interaction (PCI) between the Auger electron and photoelectron: Ar+ 2p-13/2+e- →Ar+ 3p-2ml+e- . The intensity distribution of the angular momentum state resolved Rydberg peaks revealed prominent conjugate peaks due to angular momentum exchange between photoelectrons and Auger electrons in the process. In addition, we measured the 2p-13/2nl→3p-2ml+e- resonant Auger spectra with high resolution below the 2p-13/2 threshold. Our results showed that conjugate shake-up/down 2p-13/2nd→3p-2mp+e- processes are stronger than the direct 2p-13/2nd→3p-2ms, (m-1)d+e- processes in the spectator Auger processes, implying a strong angular momentum exchange effect between photoelectron and Auger electron. |
| Databáze: | OpenAIRE |
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