Xe(L) X-ray emission from laser-cluster interaction

We have measured quantitative L X-ray emission yields from (Xe)n clusters (with n between 104 and 106 atoms/cluster) irradiated by 60 fs 800 nm IR and 180 fs 400 nm UV laser pulses of 1015-1017 W cm-2 peak intensity. Measurements have been performed as a function of cluster size (backing pressure) and laser peak intensity. Identification of spectroscopic features as well as X-ray emission yield variation with laser wavelength, intensity and cluster size are in strong contradiction with results and interpretation from previous studies