等离子体波导中的复合X射线激光

短脉冲强激光和气体靶相互作用可产生等离子体波导。利用自相似模型，得到了等离子体波导中等离子体参数的时空演化。利用自编制的程序，以类Ｈｅ氮为例，研究了在这种等离子体波导中，产生复合机制Ｘ射线激光的过程。研究表明，在等离子体波导中有可能产生复合机制Ｘ射线激光，从而有可能利用等离子波导获得大ＧＬ值的复合机制Ｘ射线激光

Recombination X Ray Lasers in a Plasma Waveguide

The laser produced plasma channel may be a promising means to produce an efficient compact soft X ray laser. The plasma parameters in such a plasma waveguide are calculated with a self similar model. It is shown that nonequilibrium underdense plasmas and candidate ions for recombination laser schemes can be obtained. As an example, the laser gains of the transition 1s3d-1s2p of He like nitrogen ions are calculated for given pumping energies and different initial gas densities.