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Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility

机译:除了α-加热之外:在国家点火设施上促进朝向燃烧 - 等离子体状态的惰性受限的融合爆炸

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摘要

Herein, recent progress on indirectly-driven inertial confinement fusion (ICF) work at the National Ignition Facility (NIF) is briefly reviewed. An analytic criteria for an ICF burning plasma is given and compared to recent ICF implosion data from the NIF. Scaling of key hotspot performance metrics is derived from simple physics considerations, including some speculative impacts of asymmetry on the assembly and disassembly of an ICF implosion. A steepest descent solution for the nonlinear equation for hot-spot pressure at peak compression, with the full effects of alpha-heating, is also given. To test if the scalings derived in this paper have some merit, they are compared to data from a variety of recent implosion campaigns on NIF and good agreement is observed. Given the implications of the scalings and existing data, a strategy for injecting more energy into the hot-spot of NIF indirectly driven ICF implosions is defined and the principles of the strategy is discussed. The importance of implosion velocity, late-time ablation pressure, and implosion scale with good symmetry in obtaining the goal of similar to 50% more hot-spot energy are highlighted along with the limitations of trying to leverage low fuel-adiabat.
机译:在此,简要审查了最近对国家点火设施(NIF)的间接驱动的惯性监禁融合(ICF)工作的进展。给出了ICF燃烧等离子体的分析标准,并与来自NIF的最近ICF爆炸数据进行了比较。关键热点绩效指标的缩放来自简单的物理考虑,包括一些投机性对ICF Instlosion的组装和拆卸的推测性影响。还给出了峰值压缩下的热点压力的非线性方程的最陡的血液方程,具有α-加热的全部效果。为了测试本文中派生的缩放有一些优点,它们与来自各种最近的NIF局部局部活动的数据进行比较,并且观察到良好的协议。鉴于缩放和现有数据的影响,定义了一种将更多能量注入更多能量间接驱动的ICF内爆射出的策略,并讨论了策略的原则。突出的爆炸速度,晚期消融压力和爆炸量表具有良好对称性的爆炸速度和曝光量表的重要性以及试图利用低燃料 - 绝热的局限性突出显示。

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  • 作者单位

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

    Los Alamos Natl Lab POB 1663 Los Alamos NM 87545 USA;

    Lawrence Livermore Natl Lab POB 808 L-472 Livermore CA 94550 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

    inertial confinement fusion; fusion; indirect drive; burning plasma; alpha-heating; implosions;

    机译:惯性监禁融合;融合;间接驱动;燃烧等离子体;α-加热;inlisions;

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