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

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

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.

Keywords: X-ray source prepulse titanium foil

Received: 11 July 2012
Revised: 08 November 2012
Accepted manuscript online:

PACS:	52.38.Dx	(Laser light absorption in plasmas (collisional, parametric, etc.))
	52.70.La	(X-ray and γ-ray measurements)

Corresponding Authors: Jia Guo
E-mail: jiaguo_2010@163.com

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

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