Figure 2
From: J-Matrix time propagation of atomic hydrogen in attosecond fields

Ionization spektrum of H after irradiation with a half cycle pulse. The electric field of the half cycle pulse is depicted in the inlay, the pulse parameters are\(E(t) = E_0 \; sin( \omega t \! - \! \omega T_f/ 2 \!+ \! \pi \! / 2) \; sin^2( \pi t / T_f), \, E_0 = 1, \, \omega = 0.05\) with total duration \(T_f = 5.\)Black solid curve: this work; red dotted curve: results from [40].