Collisionally excited X-ray laser schemes: progress at Rutherford Appleton Laboratory (Invited Paper)

摘要

Abstract: Systematic study of the collisionally pumped Ne-likegermanium 3p - 3s laser system has led to theobservation of saturated output on the J $EQ 2 - 1lines at 23.2 and 23.6 nm when a double slab target isdouble passed using a normal incidence concave mirror.The $APEQ 1 MW output power on the same lines from asimple double plasma has been used to recordpreliminary images from a Schwarzchild condenser andzone plate microscope arrangement. Initial analysis ofmeasurements on the 4d - 4p J $EQ 1 - 0 line at 7.3 nmfrom nickel-like samarium indicate a gain coefficientof between 0.4 cm$+$MIN@1$/ and 0.8 cm$+$MIN@1$/ for anincident irradiance of $APEQ 2 $MUL 10$+13$/ W/cm$+2$/using a 1.06 $mu@m heating laser on slab targets ofSmF$-3$/.!6