Rescattering of ultralow-energy electrons for single ionization of Ne in the tunneling regime

Phys Rev Lett. 2003 Sep 12;91(11):113002. doi: 10.1103/PhysRevLett.91.113002. Epub 2003 Sep 9.

Abstract

Electron emission for single ionization of Ne by 25 fs, 1.0 PW/cm(2) laser pulses at 800 nm has been investigated in a kinematically complete experiment using a "reaction microscope." Mapping the complete final state momentum space with high resolution, a distinct local minimum is observed at P(e parallel )=0, where P(e parallel ) is the electron momentum parallel to the laser polarization. Whereas tunneling theory predicts a maximum at zero momentum, our findings are in good agreement with recent semiclassical predictions which were interpreted to be due to "recollision."