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Effects of carbon impurity on the ignition of deuterium-tritium targets under the relativistic shock waves

机译：碳杂质对相对论冲击波下氘氚靶点火的影响

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One of the main concerns about the ignition and burn of deuterium-tritium (DT) plasma is the negative effect of impurities that can get into the thermonuclear fuel during target compression on the ignition of an inertial confinement fusion (ICE) target. So, the ignition condition of the spherical DI plasma of the ICF target in the presence of high-density carbon impurities at an arbitrary concentration is found. The ignition criterion of nuclear fusion plasmas is investigated using a two-temperature model derived from a common model. The ignition criterion is described by a surface in the three dimensional space. This surface is defined by the electron and ion temperatures, T-e and T-i, and the plasma density times the hot spot dimension, rho-R, for different concentrations of impurities. In this paper, a two-temperature laser induced shock wave is used. We found that one needs a laser intensity of 7.5 x 10(21) W/cm(2), a pulse duration of 1ps, and an energy of 044 kJ that induces a compression of kappa = 4 to ignite a pure DT pre-compressed target at about 500 g/cm(3). Given the constant intensity of the laser, the increase in the carbon impurity concentration increases the alpha energy deposition in the igniter zone; on the other hand, the temperature of the igniter zone decreases as a result of high losses of power densities, so that for impurity values of more than 20%, practically no hot spots are formed. Published under license by AIP Publishing.
机译：关于氘 - 氚（DT）血浆的点火和烧伤的主要担忧之一是杂质的负面影响，其在统计围绕统计融合（ICE）靶标的靶压缩过程中可以进入热核燃料。因此，发现，发现ICF靶的球形DI等离子体在任意浓度下存在高密度碳杂质的点火条件。使用来自共同模型的两温模型研究了核聚变等离子体的点火标准。点火标准由三维空间中的表面描述。该表面由电子和离子温度，T-E和T-I的定义，以及热点尺寸的等离子体密度次数，Rho-R，用于不同浓度的杂质。本文使用了一种双温激光诱导的冲击波。我们发现，一种需要激光强度为7.5×10（21）W / cm（2），脉冲持续时间为1ps，以及044kj的能量，导致kappa = 4的压缩，以点燃纯dt预压缩靶向约500克/厘米（3）。鉴于激光的恒定强度，碳杂质浓度的增加会增加点火器区中的α能量沉积;另一方面，由于功率密度的高损耗，点火器区域的温度降低，因此对于大于20％的杂质值，实际上没有形成热点。通过AIP发布在许可证下发布。

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