ABSTRACT
Recently a transient Ne-like XUV laser using combined ns and ps optical drivers has been demonstrated. The long pulse produces a quite uniform plasma with the correct ionization stage and the short one rapidly overheats it, creating an unconventional population inversion via electron collisions. Refraction of the amplified beam still causing problems (as in the traditional quasi-stationary scheme), we propose to cancel electron density gradients and enlarge the active region by using the now well-known prepulse technique. Complete simulations (laser-matter interaction, plasma kinetics and X-ray propagation) of an efficient Ne-like Fe X-Ray Laser are discussed here.
