Attosecond Correlated Dynamics of Two Electrons Passing through a Transition State
- Camus, N.
- Fischer, B.
- Ullrich, J.
- Moshammer, R.
- Kremer, M.
- Sharma, V.
- Rudenko, A.
- Bergues, B.
- Kübel, M.
- Johnson, N. G.
- Kling, M. F.
- Pfeifer, T.
Publication date
January 2012
DOI Publisher
American Physical Society (APS)Abstract
The strong-field induced decay of a doubly excited, transient Coulomb complex Ar**→Ar2++2e− is explored by tracing correlated two-electron emission in nonsequential double ionization of Ar as a function of the carrier-envelope phase. Using <6 fs pulses, electron emission is essentially confined to one optical cycle. Classical model calculations support that the intermediate Coulomb complex has lost memory of its formation dynamics and allows for a consistent, though model-dependent definition of “emission time,” empowering us to trace transition-state two-electron decay dynamics with sub-fs resolution. We find a most likely emission time difference of ∼200±100 as
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