Identification and characterization of the dielectronic process in the formation of two K-shell vacancies in atomic Li by fast electron impact - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2003

Identification and characterization of the dielectronic process in the formation of two K-shell vacancies in atomic Li by fast electron impact

Résumé

Electron correlation effects in the production of two K-shell vacancies in lithium are investigated by bombarding atomic Li with 5-keV electrons. High-resolution Auger electron spectra show that discrete doubly vacant K-shell states are predominantly formed from ionization plus excitation, giving rise to the 2sns 1,3S and 2snp 1,3P states of Li+. For these fast electron projectiles, the shake-up and dielectronic manifestations of the electron-electron interaction are shown to be the only mechanisms for creating the observed hollow states. The formation of the 2snp 1,3P states is found to be mediated only by the dielectronic process, permitting this aspect of the electron-electron interaction to be separately identified and its contribution characterized.
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hal-01217020 , version 1 (18-10-2015)

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Jimmy Rangama, Dominique Hennecart, Nikolaus Stolterfoht, John A. Tanis, Béla Sulik, et al.. Identification and characterization of the dielectronic process in the formation of two K-shell vacancies in atomic Li by fast electron impact. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2003, 68 (4), pp.040701(R). ⟨10.1103/PhysRevA.68.040701⟩. ⟨hal-01217020⟩
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