PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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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 |
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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.
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Received: 11 July 2012
Revised: 08 November 2012
Accepted manuscript online:
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PACS:
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52.38.Dx
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(Laser light absorption in plasmas (collisional, parametric, etc.))
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52.70.La
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(X-ray and γ-ray measurements)
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Corresponding Authors:
Jia Guo
E-mail: jiaguo_2010@163.com
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Cite this article:
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 2013 Chin. Phys. B 22 065201
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