Observation of Trielectronic Recombination in Be-like Cl Ions
Recombination involving the core excitation of two electrons, which may be termed trielectronic recombination, has been experimentally identified for the first time. Using [Formula presented] ions circulating in the TSR heavy-ion storage ring, we have observed surprisingly strong low-energy trielect...
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2003
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v91_n4_p_Schnell http://hdl.handle.net/20.500.12110/paper_00319007_v91_n4_p_Schnell |
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| Sumario: | Recombination involving the core excitation of two electrons, which may be termed trielectronic recombination, has been experimentally identified for the first time. Using [Formula presented] ions circulating in the TSR heavy-ion storage ring, we have observed surprisingly strong low-energy trielectronic recombination resonances, comparable to the dielectronic process. At higher electron-ion collision energies, trielectronic recombination is suppressed due to the autoionization of the triply excited intermediate state into excited final states. The formation of the intermediate state depends sensitively on configuration mixing, making trielectronic recombination a challenge to atomic-structure calculations. © 2003 The American Physical Society. |
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