We numerically investigate the characteristics of a longitudinally pumped 18.9-nm nickellike molybdenum x-ray laser generated by use of plasma waveguides. We take into account the temporal deformation of the longitudinal pump pulse, which is shown greatly to affect the overall x-ray laser’s performance. The dependence of the spatial and temporal distribution of gain within the waveguide on parameters such as electron density, pump intensity, and wavelength is investigated. The problem of small-scale density perturbations within the relatively high-density preplasma is also addressed.
© 2003 Optical Society of America
Tsuneyuki Ozaki, Hidetoshi Nakano, and Hiroto Kuroda, "Characteristics of longitudinally pumped nickellike molybdenum x-ray lasers generated in waveguides," J. Opt. Soc. Am. B 20, 402-408 (2003)