High Rydberg and Auger electrons from fast projectile ions studied by zero-degree electron spectroscopy
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説明
Abstract Zero-degree electron spectra were measured with high resolution for 64 MeV S5+ ions on He and 64 MeV S12+ ions on He and C, and for 90 MeV Sc8+ ions on He. In 64 MeV S ion collisions, a series of intense lines have been observed, which are attributed to the Auger transitions from 1s22s22p53snl to 1s22s22p6 for S5+ ions on He, and to the Coster-Kronig transitions from 1 s 2 2 p nl to 1 s 2 2 s ϵ l l′ for S12+ ions on He or C foils. The angular-momentum (l) distribution of the S12+ ions in the Rydberg state with n = 9 has been obtained and it is found that the high-l components are significantly enhanced for the solid target. In 90 MeV Sc8+ +He collisions, three groups of intense lines have been observed, which are attributed to the transitions from 1s22s22p53s23p to 1s22s22p63s, 1s22s22p63p, and 1s22s22p63d. The last transition, in which three electrons are involved via electron correlation, is studied and compared with previous results for the isoelectronic ions Al+ and Ar6+.
収録刊行物
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- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 53 421-425, 1991-04-01
Elsevier BV
