The potential of imposed magnetic fields for enhancing ignition probability and fusion energy yield in indirect-drive inertial confinement fusion
The potential of imposed magnetic fields for enhancing ignition probability and fusion energy yield in indirect-drive inertial confinement fusion
复制标题
外加磁场在间接驱动惯性约束聚变中提高点火概率和聚变能量产量的潜力
DOI：
10.1063/1.4985150
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发表时间：
2017
影响因子：
2.2
通讯作者：
S. Hawkins
中科院分区：
文献类型：
--
作者：
L. Perkins;D. Ho;B. Logan;G. Zimmerman;M. Rhodes;D. Strozzi;D. Blackfield;S. Hawkins
我们研究了在内爆压缩下施加几十特斯拉的磁场，增加到大于10 kT (100 MGauss)，可能会放宽间接驱动惯性约束聚变（ICF）目标的点火和传播燃烧所需的条件。这可能使目前在国家点火设施（NIF）上执行的ICF目标能够实现点火，或者至少实现显著的聚变能产量，这些目标目前在停滞的不利流体动力条件下对于热核燃烧来说是次边缘的[Doeppner等人，物理]。通讯学报，115,055001(2015)]。对具有低模态形状扰动和残余动能损失的NIF胶囊内爆进行了详细的二维辐射-流体动力学-燃烧模拟，结果表明，压缩场可以通过缩小聚变α粒子的范围、抑制电子热传导和稳定高模瑞利-泰勒不稳定性来增加点火概率。
We examine the potential that imposed magnetic fields of tens of Tesla that increase to greater than 10 kT (100 MGauss) under implosion compression may relax the conditions required for ignition and propagating burn in indirect-drive inertial confinement fusion (ICF) targets. This may allow the attainment of ignition, or at least significant fusion energy yields, in presently performing ICF targets on the National Ignition Facility (NIF) that today are sub-marginal for thermonuclear burn through adverse hydrodynamic conditions at stagnation [Doeppner et al., Phys. Rev. Lett. 115, 055001 (2015)]. Results of detailed two-dimensional radiation-hydrodynamic-burn simulations applied to NIF capsule implosions with low-mode shape perturbations and residual kinetic energy loss indicate that such compressed fields may increase the probability for ignition through range reduction of fusion alpha particles, suppression of electron heat conduction, and potential stabilization of higher-mode Rayleigh-Taylor instabilit...