Abstract

We study the contribution of the most important processes leading to the creation of excited states of Cl 14+ ions from the ground configurations of Cl ions in an Electron Cyclotron Resonance Ion Source (ECRIS), which lead to the emission of K X-ray lines. Theoretical values for inner-shell excitation, K and KL ionization cross-sections, and energies and transition probabilities for the de-excitation processes are calculated in the framework of the Multi-Configuration Dirac–Fock (MCDF) method. With reasonable assumptions about the electron energy distribution, a theoretical Kα X-ray spectrum is obtained, which reproduces closely a recent experimental result.

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