摘要
An experiment on a transient nickel-like Mo x-ray laser in the extreme light Ⅲ （XL Ⅲ） laser facility is analyzed, based on the two-dimensional hydrodynamic evolutions of a plasma under a non-uniform incident laser. Influences of the pulse duration and intensity on plasma scale length, electron density, temperature, as well as their distributions are investigated, based on which the pre-pulse character and delay time are determined according to the parameters of laser line focus on XLⅢ. It is found that the optimal intensity of the pre-pulse is 1.0 TW/cm^2 with a duration of 500ps; a well modified pre-plasma can be obtained after 1.6ns under low quality line focus in the lab.
An experiment on a transient nickel-like Mo x-ray laser in the extreme light Ⅲ （XL Ⅲ） laser facility is analyzed, based on the two-dimensional hydrodynamic evolutions of a plasma under a non-uniform incident laser. Influences of the pulse duration and intensity on plasma scale length, electron density, temperature, as well as their distributions are investigated, based on which the pre-pulse character and delay time are determined according to the parameters of laser line focus on XLⅢ. It is found that the optimal intensity of the pre-pulse is 1.0 TW/cm^2 with a duration of 500ps; a well modified pre-plasma can be obtained after 1.6ns under low quality line focus in the lab.
基金
Supported by the National Natural Science Foundation of China under Grant No 10874242, the National Basic Research Program of China under Grant No 2007CB815105, and Research Fund for the Doctoral Program of Higher Education of China under Grant No 20070290008.
