Nondipole ionization dynamics of atoms in superintense high-frequency attosecond pulses.
The ionization of H(1s) in superintense, high-frequency, attosecond pulses is studied beyond the dipole approximation. We identify a unique nondipole 3rd lobe in the angular distribution of the ejected electron and show that this lobe has a well-defined classical counterpart. The ionization is likely to occur in the direction opposite to the laser propagation direction, which is fully understood from an analysis of the classical dynamics.
Førre
M
M
Department of Physics and Technology, University of Bergen, N-5007 Bergen, Norway.
Hansen
J P
JP
Kocbach
L
L
Selstø
S
S
Madsen
L B
LB