Abstract
Cross sections for inner-shell and outer-shell excitations of lithium atomsin collisions with fast charged projectiles have been calculated.For these excitation processes, the relative importance of the first- andsecond-order mechanisms, the dependence of the cross sections on the signof the projectile charge, as well as the effect of electron correlations inthe initial and final state have been investigated. Thecalculated results are compared with experimental data.Correlations are found to be essential in explaining the large ratio between cross sections for an excitation to the 1s(2s2p 3P) 2Paand the 1s(2s2p 1P) 2Pb states.
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