First steps towards two-electron momentum density measurements

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 densitie...

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Bibliographic Details
Main Authors: van Boeyen, R.W., Watanabe, N, Doering, J P, Moore, J H, Coplan, M A, Cooper, J W
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary: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.
ISSN:0094-243X