Two-dimensional hydrodynamic characteristics of X-ray lasers plasmasT. Cheng1, 2, Y. J. Li1, 2, L. M. Meng1, 2 and J. Zhang2
1 China University of Mining and Technology - Beijing 100083, China
2 Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences - Beijing 100190, China
received 5 August 2008; accepted in final form 14 October 2008; published November 2008
published online 18 November 2008
The two-dimensional hydrodynamic behavior of an X-ray laser plasma on a slab under non-equilibrium conditions is studied in a novel way combining numerical calculations with analytical results from a one-dimensional similar equation. Changes of both electron density and temperature with time were studied. It is found that the inhomogeneity of temperature along the z-direction due to the non-uniformity of the foci line can be relaxed by the hydrodynamic behavior and usually this process takes more than 1 ns to become uniform, while the density distribution takes several hundred picoseconds. As a result of the inhomogeneity hydrodynamic oscillation of the plasma in the z-direction was obtained.
52.59.Ye - Plasma devices for generation of coherent radiation.
42.55.Vc - X- and -ray lasers.
© EPLA 2008