info:eu-repo/semantics/article
Signatures of tunneling and multiphoton ionization in the electron-momentum distributions of atoms by intense few-cycle laser pulses
Date
2006-12Registration in:
Wickenhauser, M.; Tong, X. M.; Arbo, Diego; Burgdörfer, J.; Lin, C. D.; Signatures of tunneling and multiphoton ionization in the electron-momentum distributions of atoms by intense few-cycle laser pulses; American Physical Society; Physical Review A: Atomic, Molecular And Optical Physics; 74; 4; 12-2006; 41402-41402, 1-4
1050-2947
Author
Wickenhauser, M.
Tong, X. M.
Arbo, Diego
Burgdörfer, J.
Lin, C. D.
Abstract
Electron-momentum distributions for above-threshold ionization of argon in a few-cycle, linearly polarized laser pulse are investigated. Spectral features haracteristic of multiphoton as well as tunneling ionization coexist over a range of the Keldysh parameter in the transition regime 1. Surprisingly, the simple strong-field approximation SFA is capable of reproducing the key features of the two-imensional momentum distributions found in the full solution of the time-dependent Schrödinger equation, despite the fact that SFA is known to severely underestimate the total ionization probability.