Sandia National Laboratories, Albuquerque, New Mexico 87185-1186, USA.
Phys Rev Lett. 2012 Jan 13;108(2):025003. doi: 10.1103/PhysRevLett.108.025003. Epub 2012 Jan 12.
Magnetized inertial fusion (MIF) could substantially ease the difficulty of reaching plasma conditions required for significant fusion yields, but it has been widely accepted that the gain is not sufficient for fusion energy. Numerical simulations are presented showing that high-gain MIF is possible in cylindrical liner implosions based on the MagLIF concept [S. A. Slutz et al Phys. Plasmas 17, 056303 (2010)] with the addition of a cryogenic layer of deuterium-tritium (DT). These simulations show that a burn wave propagates radially from the magnetized hot spot into the surrounding much denser cold DT given sufficient hot-spot areal density. For a drive current of 60 MA the simulated gain exceeds 100, which is more than adequate for fusion energy applications. The simulated gain exceeds 1000 for a drive current of 70 MA.
磁化惯性融合（MIF）可以大大减轻达到显著聚变产额所需的等离子体条件的难度，但人们普遍认为增益对于聚变能来说是不够的。本文提出的数值模拟表明，在基于 MagLIF 概念的圆柱型内爆中，通过增加一层低温的氘氚（DT），高增益 MIF 是可能的。这些模拟表明，在足够大的磁斑点面密度下，燃烧波从磁化的热斑径向传播到周围密度大得多的冷 DT。对于 60 MA 的驱动电流，模拟增益超过 100，这对于聚变能应用来说已经足够了。当驱动电流为 70 MA 时，模拟增益超过 1000。
