中国物理B ›› 2013, Vol. 22 ›› Issue (6): 65201-065201.doi: 10.1088/1674-1056/22/6/065201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

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

熊俊a, 董佳钦a, 贾果a, 王瑞荣a, 王伟a, 傅思祖b, 郑无敌b   

  1. a Shanghai Institute of Laser Plasma, Chinese Academy of Sciences, Shanghai 201800, China;
    b Beijing Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 收稿日期:2012-07-11 修回日期:2012-11-08 出版日期:2013-05-01 发布日期:2013-05-01

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

Xiong Jun (熊俊)a, Dong Jia-Qin (董佳钦)a, Jia Guo (贾果)a, Wang Rui-Rong (王瑞荣)a, Wang Wei (王伟)a, Fu Si-Zu (傅思祖)b, Zheng Wu-Di (郑无敌)b   

  1. a Shanghai Institute of Laser Plasma, Chinese Academy of Sciences, Shanghai 201800, China;
    b Beijing Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2012-07-11 Revised:2012-11-08 Online:2013-05-01 Published:2013-05-01
  • Contact: Jia Guo E-mail:jiaguo_2010@163.com

摘要: An experiment with thin titanium foils irradiated by two pulses delayed in time is conducted on the Shenguang-II laser facility. A prepulse induces an underdense plasma, 2-ns later a main pulse (λ L=0.35 μm, EL ≈ 120 J, τ L ≈ 100 ps) is injected into the underdense plasma and produces strong line emission from titanium K shell (i.e., Heα 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 backlighting 4.7-keV X-rays in a Rayleigh-Taylor hydrodynamic instability experiment.

关键词: X-ray source, prepulse, titanium foil

Abstract: An experiment with thin titanium foils irradiated by two pulses delayed in time is conducted on the Shenguang-II laser facility. A prepulse induces an underdense plasma, 2-ns later a main pulse (λ L=0.35 μm, EL ≈ 120 J, τ L ≈ 100 ps) is injected into the underdense plasma and produces strong line emission from titanium K shell (i.e., Heα 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 backlighting 4.7-keV X-rays in a Rayleigh-Taylor hydrodynamic instability experiment.

Key words: X-ray source, prepulse, titanium foil

中图分类号:  (Laser light absorption in plasmas (collisional, parametric, etc.))

  • 52.38.Dx
52.70.La (X-ray and γ-ray measurements)