Optimization of 4.7-keV X-ray titanium sources driven by 100-ps laser pulses  

作　　者：熊俊 董佳钦 贾果 王瑞荣 王伟 傅思祖 郑无敌 

机构地区：[1]Shanghai Institute of Laser Plasma,Chinese Academy of Sciences [2]Beijing Institute of Applied Physics and Computational Mathematics

出　　处：《Chinese Physics B》2013年第6期454-458,共5页中国物理B（英文版）

摘　　要：An experiment with thin titanium foils irradiated by two pulses delayed in time is conducted on the bnenguang-Il laser facility. A prepulse induces an underdense plasma, 2-ns later a main pulse （λL ≈ 0.35 μm, EL ≈120 J, τL ≈100 ps） is injected into the underdense plasma and produces strong line emission from the titanium K shell （i.e., Hea at 4.7 keV）. Data show that the intensity of 4.7-keV X-ray emission with the prepulse is approximately twice more than without the prepulse, and can be used as a backlighting source satisfying the diagnostic requirements for dense plasma probing. High- quality plasma images are obtained with the backlighfing 4.7-keV X-rays in a Rayleigh-Taylor hydrodynamic instability experiment.An experiment with thin titanium foils irradiated by two pulses delayed in time is conducted on the bnenguang-Il laser facility. A prepulse induces an underdense plasma, 2-ns later a main pulse （λL ≈ 0.35 μm, EL ≈120 J, τL ≈100 ps） is injected into the underdense plasma and produces strong line emission from the titanium K shell （i.e., Hea at 4.7 keV）. Data show that the intensity of 4.7-keV X-ray emission with the prepulse is approximately twice more than without the prepulse, and can be used as a backlighting source satisfying the diagnostic requirements for dense plasma probing. High- quality plasma images are obtained with the backlighfing 4.7-keV X-rays in a Rayleigh-Taylor hydrodynamic instability experiment.

关 键 词：X-ray source PREPULSE titanium foil 

分 类 号：TN24[电子电信—物理电子学]