Fast ignition of inertial fusion targets by laser-driven carbon beams
Fast ignition of inertial fusion targets by laser-driven carbon beams
复制标题
DOI：
10.1063/1.3234248
复制
发表时间：
2009-10-01
影响因子：
2.2
通讯作者：
Meyer-ter-Vehn, J.
中科院分区：
文献类型：
--
作者：
Honrubia, J. J.;Fernandez, J. C.;Meyer-ter-Vehn, J.
对离子束驱动的快速点火进行了二维数值模拟。计算了具有麦克斯韦谱的质子和具有准单能和麦克斯韦能量分布的碳离子的点火能。本文研究了三种不同密度分布的氘氚压缩核周围日冕等离子体的影响。结果表明，准单能离子与压缩氘氚有较好的耦合，点火能量显著降低。准单能碳离子和相对论电子作为点火器光束的比较显示出类似的激光能量要求，只要可以实现大约10%的激光到准单能碳离子的转换效率。(C)2009年美国物理学会。[doi：10.1063/1.3234248]
Two-dimensional simulations of ion beam driven fast ignition are presented. Ignition energies of protons with Maxwellian spectrum and carbon ions with quasimonoenergetic and Maxwellian energy distributions are evaluated. The effect of the coronal plasma surrounding the compressed deuterium-tritium is studied for three different fuel density distributions. It is found that quasimonoenergetic ions have better coupling with the compressed deuterium-tritium and substantially lower ignition energies. Comparison of quasimonoenergetic carbon ions and relativistic electrons as ignitor beams shows similar laser energy requirements, provided that a laser to quasimonoenergetic carbon ion conversion efficiency around 10% can be achieved. (C) 2009 American Institute of Physics. [doi:10.1063/1.3234248]