- Conference date: 30 July-2 August 2003
- Location: Konigstein (Germany)
Five‐fold differential cross sections (5DCS) for the electron‐impact double ionization of the 3s electrons of magnesium have been measured in a high‐impact‐energy, high‐momentum‐transfer regime. These measurements fulfill two conditions necessary for the measurement of two‐electron momentum densities, those being impulsive ionization and identification of the double‐ionization mechanisms. The form of the measured cross sections provides strong evidence for two different impulsive two‐step ionization mechanisms. Second Born calculations are in agreement with the experimental data. The implications for the measurement of two‐electron momentum densities are discussed.
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