中国物理B ›› 2012, Vol. 21 ›› Issue (9): 95202-095202.doi: 10.1088/1674-1056/21/9/095202

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

Directly driven Rayleigh–Taylor instability of modulated CH targets

贾果, 熊俊, 董佳钦, 谢志勇, 吴江   

  1. Shanghai Institute of Laser Plasma, Shanghai 201800, China
  • 收稿日期:2011-06-21 修回日期:2012-04-24 出版日期:2012-08-01 发布日期:2012-08-01

Directly driven Rayleigh–Taylor instability of modulated CH targets

Jia Guo (贾果), Xiong Jun (熊俊), Dong Jia-Qin (董佳钦), Xie Zhi-Yong (谢志勇), Wu Jiang (吴江)   

  1. Shanghai Institute of Laser Plasma, Shanghai 201800, China
  • Received:2011-06-21 Revised:2012-04-24 Online:2012-08-01 Published:2012-08-01
  • Contact: Dong Jia-Qin E-mail:dongjiaqin@hotmail.com

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摘要： Directly driven ablative Rayleigh-Taylor (R-T) instability of modulated CH targets was studied using the face-on X-ray radiography on the Shen-Guang II device. We obtained temporal evolution images of the R-T instability perturbation. The R-T instability growth factor has been obtained by using the methods of fast Fourier transform and seeking difference of light intensity between the peak and the valley of the targets. Through comparing with the the theoretical simulation, we found that the experimental data had a good agreement with the theoretical simulation results before 1.8 ns, and was lower than the theoretical simulation results after that.

关键词: Rayleigh-Taylor hydrodynamic instability, Fourier analysis, theoretical simulation

Abstract: Directly driven ablative Rayleigh-Taylor (R-T) instability of modulated CH targets was studied using the face-on X-ray radiography on the Shen-Guang II device. We obtained temporal evolution images of the R-T instability perturbation. The R-T instability growth factor has been obtained by using the methods of fast Fourier transform and seeking difference of light intensity between the peak and the valley of the targets. Through comparing with the the theoretical simulation, we found that the experimental data had a good agreement with the theoretical simulation results before 1.8 ns, and was lower than the theoretical simulation results after that.

Key words: Rayleigh-Taylor hydrodynamic instability, Fourier analysis, theoretical simulation

中图分类号:  (Laser inertial confinement)

  • 52.57.-z
02.30.Nw (Fourier analysis) 02.60.Cb (Numerical simulation; solution of equations)