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<p>Indirect-drive double-shell implosions have been performed at 100 kJ laser facility in China. The system of differential equations for the unablated mass, the average implosion velocity, and the ablation front radius of an outer shell within an indirect-drive double-shell capsule during acceleraction and deceleraction phases has been proposed from conservation principles of hydrodynamics. In addition, corrected rocket model for the inner shell has been built; the radius and velocity of the outer surface of the inner shell, as well as the radius and velocity of the inner shell mass center, are solved and give simple expressions. These relations provide the maximum implosion velocity and remaining unablated mass in terms of the initial capsule and the radiation temperature. These results are compared with numerical simulations, and good agreements have been observed.</p>

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Rocket models for double-shell capsules at 100 kJ laser facility

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月1日

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  • W. L. Shang,
  • W. Jiang,
  • H. Li,
  • L. Yao,
  • J. H. Zheng,
  • L. Y. Kuang,
  • Y. T. Yuan,
  • S. Y. Tu,
  • Y. D. Pu,
  • W. Y. Miao,
  • T. X. Huang,
  • Z. C. Li,
  • L. Guo,
  • D. Yang,
  • W. M. Zhou

摘要

Indirect-drive double-shell implosions have been performed at 100 kJ laser facility in China. The system of differential equations for the unablated mass, the average implosion velocity, and the ablation front radius of an outer shell within an indirect-drive double-shell capsule during acceleraction and deceleraction phases has been proposed from conservation principles of hydrodynamics. In addition, corrected rocket model for the inner shell has been built; the radius and velocity of the outer surface of the inner shell, as well as the radius and velocity of the inner shell mass center, are solved and give simple expressions. These relations provide the maximum implosion velocity and remaining unablated mass in terms of the initial capsule and the radiation temperature. These results are compared with numerical simulations, and good agreements have been observed.