Autoionization…
Lorentzian shape
Time profile:
Field-free:
Energy domain:
Laser-assisted: electron spectrum under strong field approximation (
SFA
):
Virtual three-step process:
1.
Resonance state excited by X-ray at time t
1
;
2.
Decay at time t
2
giving birth to continuum electrons;
3.
Propagation of electrons in the laser field.
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