Issue
EPL
Volume 84, Number 4, November 2008
Article Number 45001
Number of page(s) 6
Section Physics of Gases, Plasmas and Electric Discharges
DOI http://dx.doi.org/10.1209/0295-5075/84/45001
Published online 18 November 2008
EPL, 84 (2008) 45001
DOI: 10.1209/0295-5075/84/45001

Two-dimensional hydrodynamic characteristics of X-ray lasers plasmas

T. 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

lyj@aphy.iphy.ac.cn

received 5 August 2008; accepted in final form 14 October 2008; published November 2008
published online 18 November 2008

Abstract
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.

PACS
52.59.Ye - Plasma devices for generation of coherent radiation.
42.55.Vc - X- and $\gamma$-ray lasers.

© EPLA 2008