Abstract
The interaction of electrons with metastable Sr atoms, as a result of which the latter are simultaneously ionized and excited, is investigated experimentally. The magnitudes of the interaction cross sections (reaching ≈5 × 10−20 m2 for the 52 S 1/2-32 P 3/2 transition in Sr II) and their energy dependences are determined. Possible mechanisms of this interaction are discussed.
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