The gain is predicted for a solid molybdenum target illuminated by several joules of combined energy from a nanosecond laser pulse to create a preplasma followed by a picosecond laser pulse to drive the gain. Gains greater than 300 cm<sup>−1</sup> are predicted for the Ni-like Mo 4d <sup>1</sup>S<sub>0</sub>→4p <sup>1</sup>P<sub>1</sub> transition at 18.9 nm, which is driven by the monopole collisional excitation. High gain is also predicted for a self-photo-pumped 4f <sup>1</sup>P<sub>1</sub>→4d <sup>1</sup>P<sub>1</sub> transition at 22.0 nm and several other transitions driven by inner shell collisional ionization.
© 1997 Optical Society of America
Joseph Nilsen, "Design of a picosecond-laser-driven Ni-like Mo x-ray laser near 20 nm," J. Opt. Soc. Am. B 14, 1511-1514 (1997)