Two electrons can escape an atom simultaneously through a collective tunneling channel, with the electron-electron repulsion shaping the escape path and leaving a measurable lateral momentum signature.
The two asymptotics do not match, but the contribution of that part of space where|y| ≥ |x|into the can be estimated by inte- grating 1/|y(t)|fromτ 0 to ˜τsuch thaty(˜τ) =x(˜τ)
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Collective tunnel ionization in atomic systems
Two electrons can escape an atom simultaneously through a collective tunneling channel, with the electron-electron repulsion shaping the escape path and leaving a measurable lateral momentum signature.