Recent results on constructing of an efficient hard X-ray source
using solid targets irradiated by high-contrast 200-fs laser pulses
with an intensity above 1016 W/cm2 are
presented. We used different solid targets with a laser- and
electrochemically modified surface layer: craters, pyramidal cavities,
porous silicon, gratings. Experimental data obtained confirms that
using solid targets with a corrugated surface one can achieve a
prominent increase both in the efficiency of hard X-ray generation (in
the quanta range 2–30 keV) and in the hot electron temperature of
plasma.
