Investigation on the hydrodynamics of slab x-ray laser plasma by nonuiform line focused laser irradiation  

作　　者：程涛 李英骏 孟立民 李希波 

机构地区：[1]China University of Mining and Technology

出　　处：《Chinese Physics B》2011年第2期260-265,共6页中国物理B（英文版）

基　　金：suported by the National Natural Science Foundation of China (Grant No. 10874242);the National Basic Research Program of China (973 Program) (Grant No. 2007CB815105);Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070290008)

摘　　要：Based on the two-dimensional model, this paper compares the hydrodynamics of slab x-ray laser plasma produced by different nonuniform line focused irradiations. It finds that the average intensity and the duration of laser pulse and the overall shape of the intensity distribution in the focal line have different influences on the plasma. Calculations show that the evolution of temperature variation is more sensitive to the pulse duration and the electron density variation is more sensitive to the pulse intensity. Pulses with duration of 200 ps to 500 ps and with intensity of 0.2 TW/cm2 to 1.0 TW/cm2 are proved acceptable in slab x-ray lasers.Based on the two-dimensional model, this paper compares the hydrodynamics of slab x-ray laser plasma produced by different nonuniform line focused irradiations. It finds that the average intensity and the duration of laser pulse and the overall shape of the intensity distribution in the focal line have different influences on the plasma. Calculations show that the evolution of temperature variation is more sensitive to the pulse duration and the electron density variation is more sensitive to the pulse intensity. Pulses with duration of 200 ps to 500 ps and with intensity of 0.2 TW/cm2 to 1.0 TW/cm2 are proved acceptable in slab x-ray lasers.

关 键 词：PLASMA slab x-ray laser nonuniform line focused laser irradiation HYDRODYNAMICS 

分 类 号：O53[理学—等离子体物理]