Can we build model for double ionization?
- The electron is created at around 17 degrees of phase in the ionization of D2
- A vibrational wave packet is created in the 1sg potential curve of the D2+ molecule starting at 1.4 a.u.
- Meanwhile the electron returns to the molecule after 1.35 fs (times an integer) and reionizes the molecule into d+ and d+.
- Problem: At 1 x 10 14 w/cm2 the Up is only 6eV; FC ionization energy is 26 eV.
-Solution: the returning electron does not directly ionize the D2+, it just excites it to a state from which the laser field immediately removes it.