title: Effects of pump propagation and absorption on the gain distribution of longitudinally pumped Ni-like molybdenum x-ray lasers.
abstract: We reveal from simulations that in longitudinally pumped Ni-like Mo x-ray lasers, deformation of the temporal gain profile can occur, causing the x-ray laser pulse to have a steep rising edge. This is shown to be due to the rapid change in the inverse bremsstrahlung absorption when the main picosecond pulse pumps the cold preplasma.
authors.affiliation: NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
authors.forename: Tsuneyuki
authors.initials: T
authors.lastname: Ozaki
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Nakano
authors.forename: Hiroto
authors.initials: H
authors.lastname: Kuroda