Back to Search
Start Over
Laser-induced nonsequential double ionization: kinematic constraints for the recollision-excitation-tunneling mechanism
- Publication Year :
- 2009
-
Abstract
- We investigate the physical processes in which an electron, upon return to its parent ion, promotes a second electron to an excited state, from which it subsequently tunnels. Employing the strong-field approximation and saddle-point methods, we perform a detailed analysis of the dynamics of the two electrons, in terms of quantum orbits, and delimit constraints for their momentum components parallel to the laser-field polarization. The kinetic energy of the first electron, upon return, exhibits a cutoff slightly lower than $10U_p$, where $U_p$ is the ponderomotive energy, as in rescattered above-threshold ionization (ATI). The second electron leaves the excited state in a direct ATI-like process, with the maximal energy of $2U_p$. We also compute electron-momentum distributions, whose maxima agree with our estimates and with other methods.<br />Comment: 13 pages, 4 figures
- Subjects :
- Physics - Atomic Physics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.0906.4229
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1080/09500340903414619