Pathways towards break even for low convergence ratio direct-drive inertial confinement fusion
Pathways towards break even for low convergence ratio direct-drive inertial confinement fusion
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低收敛比直驱惯性约束聚变实现盈亏平衡的途径
DOI：
10.1017/s0022377822000265
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发表时间：
2022
影响因子：
2.5
通讯作者：
Paddock R
中科院分区：
文献类型：
--
作者：
Paddock R
在间接驱动实验证明了低收敛比（低于17）的良好性能之后，以前的直接驱动模拟确定了一个与聚变相关的制度，预计该制度对流体动力学不稳定性增长具有鲁棒性。本文扩展了这些结果与模拟的内爆在较低的能量为100和270千焦，和“流体动力学等效”胶囊，表现出可比的收敛比，内爆速度和飞行中的纵横比，而不需要低温冷却，这将允许一维的假设一样的性能进行测试，目前的设施。一系列的技术，以提高性能，在这个制度，然后进行调查，包括使用双色和深紫外激光脉冲。最后，进一步的模拟表明，通过辅助加热将电子能量沉积到低会聚比内爆的热点也会导致产额的显着增加。结果包括收支平衡的1.1兆焦耳的总能量输入（包括估计370千焦的短脉冲激光能量，以产生电子束的辅助加热），但被发现是高度依赖于电子束可以创建和传输到热点驱动的加热机制的效率。
Following indirect-drive experiments which demonstrated promising performance for low convergence ratios (below 17), previous direct-drive simulations identified a fusion-relevant regime which is expected to be robust to hydrodynamic instability growth. This paper expands these results with simulated implosions at lower energies of 100 and 270 kJ, and ‘hydrodynamic equivalent’ capsules which demonstrate comparable convergence ratio, implosion velocity and in-flight aspect ratio without the need for cryogenic cooling, which would allow the assumptions of one-dimensional-like performance to be tested on current facilities. A range of techniques to improve performance within this regime are then investigated, including the use of two-colour and deep ultraviolet laser pulses. Finally, further simulations demonstrate that the deposition of electron energy into the hotspot of a low convergence ratio implosion through auxiliary heating also leads to significant increases in yield. Results include break even for 1.1 MJ of total energy input (including an estimated 370 kJ of short-pulse laser energy to produce electron beams for the auxiliary heating), but are found to be highly dependent upon the efficiency with which electron beams can be created and transported to the hotspot to drive the heating mechanism.
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影响因子：
3.3
作者：
Cheng, Baolian;Bradley, Paul A.;Thomas, Cliff A.
通讯作者：
Thomas, Cliff A.
影响因子：
2.2
作者：
R. Nora;R. Betti;K. Anderson;A. Shvydky;A. Bose;K. Woo;A. Christopherson;J. Marozas;T. Collins;P. Radha;S. X. Hu;R. Epstein;F. Marshall;R. Mccrory;T. Sangster;D. Meyerhofer
通讯作者：
R. Nora;R. Betti;K. Anderson;A. Shvydky;A. Bose;K. Woo;A. Christopherson;J. Marozas;T. Collins;P. Radha;S. X. Hu;R. Epstein;F. Marshall;R. Mccrory;T. Sangster;D. Meyerhofer
惯性约束聚变的综合阿尔法加热模型
影响因子：
2.2
作者：
A. Christopherson;R. Betti;A. Bose;J. Howard;K. Woo;E. Campbell;J. Sanz;B. Spears
通讯作者：
B. Spears
惯性聚变能源的巨大挑战
影响因子：
2.2
作者：
J. Nuckolls
通讯作者：
J. Nuckolls
使用 GEKKO XII 激光器进行间接-直接混合靶标实验
影响因子：
3.3
作者：
H. Nishimura;H. Shiraga;H. Azechi;N. Miyanaga;M. Nakai;N. Izumi;M. Nishikino;M. Heya;K. Fujita;Y. Ochi;K. Shigemori;N. Ohnishi;M. Murakami;K. Nishihara;R. Ishizaki;H. Takabe;K. Nagai;T. Norimatsu;M. Nakatsuka;T. Yamanaka;S. Nakai;C. Yamanaka;K. Mima
通讯作者：
K. Mima