Time-dependent H-like and He-like Al lines produced by ultra-short pulse laser

摘要

We have performed numerical modeling of time-resovled x-ray spectra from thin foil targets heated by the LLNL Ultra-short pulse (USP) laser. The targets were aluminum foils of thickness ranging from 250A to 1250 A, heated with 120 fsec pulses of 400 nm light from the USP laser. The laser energy was approximately 0.2 Joules, focused to a 3 micron spot size for a peak intensity near 2 x 10~19 W/cm~2. Lyalpha and Healpha lines were recorded using a 900 fsec x-ray streak camera.