Parameter spaces of laser indirect-driven target by theoretic scaling laws

Yang Chen; Fan Zhengfeng; Liu Jie; Zhang Cunbo; Yu Chengxin; Ren Guoli

doi:10.11884/HPLPB201931.180339

Volume 31 Issue 6

Jul. 2019

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Yang Chen, Fan Zhengfeng, Liu Jie, et al. Parameter spaces of laser indirect-driven target by theoretic scaling laws[J]. High Power Laser and Particle Beams, 2019, 31: 062001. doi: 10.11884/HPLPB201931.180339

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Yang Chen, Fan Zhengfeng, Liu Jie, et al. Parameter spaces of laser indirect-driven target by theoretic scaling laws[J]. High Power Laser and Particle Beams, 2019, 31: 062001. doi: 10.11884/HPLPB201931.180339

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Parameter spaces of laser indirect-driven target by theoretic scaling laws

doi: 10.11884/HPLPB201931.180339

Yang Chen^{1, 2
,},
Fan Zhengfeng^{1, 3},
Liu Jie^{1, 3
,
,},
Zhang Cunbo¹,
Yu Chengxin¹,
Ren Guoli¹

1.
Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
2.
Graduate School of China Academy of Engineering Physics, Beijing 100088, China
3.
Center for Applied Physics and Technology, Peking University, Beijing 100871, China

Received Date: 2018-11-26
Rev Recd Date: 2019-03-26
Publish Date: 2019-07-15

Abstract

Abstract

This paper studies settles systematically the physical process of the laser indirect-driven ignition target implosion. The theoretical methods and one-dimensional hydro-dynamics simulations are used to give key scaling laws in capsule implosion. Based on these scaling laws, the volcanic islands of capsule mass-radius parameter space are obtained under the given conditions of hohlraum radiation temperature, in-flight adiabat, shaping velocity and ablator material. The variations in performance parameters with radiation temperature, in-flight adiabat, etc. are investigated. When the hohlraum radiation temperature increaseds, the stability of the capsule implosion will be better. And the capsule radius needs to be decreased under the condition that the mass is constant. When the in-flight adiabat increases, the energy gain decreases slightly and the stability becomes better. However the reduction in the one-dimensional ignition threshold factor results in a narrowing of the area of the volcanic island. When the shaping speed increases, the area of the volcanic island becomes slightly larger, and the stability change is not significant. The capsule radius needs to be increased under the condition that the capsule mass is constant, which causes larger aspect ratio. When the shell ablator material is changed to improve the mass ablation rate and the ablation pressure, the energy gain is larger and the stability is better. The capsule radius needs to be decreased under the condition that the capsule mass is constant.
- laser fusion,
- indirect-driven,
- implosion dynamics,
- capsule design,
- scaling law

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References(29)

References

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