Abstract
Fine details in the cross section for electron impact ionization of Mg+ ions (configuration 1s 2 2s 2 2p 6 3s) have been measured with an energy resolution of 0.3 eV. Structure on top of a smooth direct-ionization “background” reflects the presence of indirect ionization mechanisms. Such contributions in a Na-like ion involvenon-resonant excitation of a 2p electron to singly autoionizing intermediate states subsequently decaying into the channel of net single ionization of the parent ion. We observe even stronger indirect contributions fromresonant excitation of a 2p electron with simultaneous dielectronic capture of the projectile electron into doubly autoionizing states which decay by successive emission of two electrons.
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Müller, A., Hofmann, G., Tinschert, K. et al. Doubly autoionizing capture resonances ine + Mg+ collisions. Z Phys D - Atoms, Molecules and Clusters 15, 145–149 (1990). https://doi.org/10.1007/BF01437008
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DOI: https://doi.org/10.1007/BF01437008