Experimental fingerprint of the electron's longitudinal momentum at the tunnel exit in strong field ionization
arXiv:2211.01791 · doi:10.1103/PhysRevResearch.5.033094
Abstract
We present experimental data on the strong field tunnel ionization of argon in a counter-rotating two-color (CRTC) laser field. We find that the initial momentum component along the tunneling direction changes sign comparing the rising and the falling edge of the CRTC field. If the initial momentum at the tunnel exit points in the direction of the ion at the instant of tunneling, this manifests as an enhanced Coulomb interaction of the outgoing electron with its parent ion. Our conclusions are in accordance with predictions based on strong field approximation.
arXiv comment6 pages, 4 figures
References in corpus (13)
- Strong Field Approximation for Systems with Coulomb Interaction
- Semiclassical two-step model for strong-field ionization
- Ultrafast Preparation and Detection of Ring Currents in Single Atoms
- Non-Sequential Double Ionization by Counter Rotating Circularly Polarized Two-Color Laser Fields
- Sub-barrier Coulomb effects on the interference pattern in tunneling ionization photoelectron spectra
- Photoelectron holographic interferometry to probe the longitudinal momentum offset at the tunnel exit
- Direct Experimental Access to the Nonadiabatic Initial Momentum Offset upon Tunnel Ionization
- Keldysh-Rutherford model for attoclock
- Sub-Cycle Interference upon Tunnel-Ionization by Counterrotating Two-Color Fields
- Comparison of different approaches to the longitudinal momentum spread after tunnel ionization
- Gouy's Phase Anomaly in Electron Waves Produced by Strong-Field Ionization
- Angular dependence of the Wigner time delay upon tunnel ionization of
- On the longitudinal momentum of the electron at the tunneling exit