Double Escape of Two Electrons at Threshold: Dependence onL,S, andπ

Abstract
The Wannier theory for the double escape of two electrons from a positive ion is extended to general values of the total orbital and spin angular momentum and parity of the pair. Except for Se3 and Pe1, all states are described by the same threshold law. Specific results on the correlations in energy, angle, and spin of the electrons are derived and compared with experimental data.