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Abstract:
The angular distribution of two emitted electrons in the double Auger process in atoms has been theoretically investigated. In particular, the double Auger decay of a 1s vacancy in Ne and a 2p vacancy in Ar is considered. In analogy with double photoionization, we present a convenient parametrization of the angular correlation patterns for all possible angular momenta of the emitted electron pair. As a limiting case we investigate the angular correlations within the shake-off mechanism of the double Auger process. We also consider the influence of initial orientation of the vacancy on the electron angular distributions (circular dichroism).
