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

doi:10.1088/1674-1056/22/6/065201

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

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

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/Abstract

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, E_L ≈ 120 J, τ _L ≈ 100 ps) is injected into the underdense plasma and produces strong line emission from titanium K shell (i.e., He_α 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, E_L ≈ 120 J, τ _L ≈ 100 ps) is injected into the underdense plasma and produces strong line emission from titanium K shell (i.e., He_α 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)

熊俊, 董佳钦, 贾果, 王瑞荣, 王伟, 傅思祖, 郑无敌. Optimization of 4.7-keV X-ray titanium sources driven by 100-ps laser pulse[J]. 中国物理B, 2013, 22(6): 65201-065201.

Xiong Jun (熊俊), Dong Jia-Qin (董佳钦), Jia Guo (贾果), Wang Rui-Rong (王瑞荣), Wang Wei (王伟), Fu Si-Zu (傅思祖), Zheng Wu-Di (郑无敌). Optimization of 4.7-keV X-ray titanium sources driven by 100-ps laser pulse[J]. Chin. Phys. B, 2013, 22(6): 65201-065201.

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

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

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