The laser-generated deuteron beam is a promising scheme for providing the required energy for igniting a pre-compressed fuel in the fast ignition method in the inertial confinement fusion approach. Deuteron beam provides extra energy through beam-fusion(BF) reactions during the hot-spot formation in the pre-compressed fuel. During the compression and hot-spot formation stages, Impurities are produced due to the mixing of the fuel with the material of the structural elements of the target. So, the efficiency of BF of the deuteron beam in a spherical deuteron-triton(DT) fuel in the presence of impurity (such as beryllium, carbon, aluminium, and gold) with arbitrary concentration is investigated. Deuteron beam was considered with Maxwellian energy distribution at a temperature of 3 MeV, which passes through the pre-compressed contaminated DT fuel with a non-uniform density profile. It shows that an increase of mixed-ion charge state and density ratio results in the substantial diminution of the deuteron BF probability, which leads to a reduction in deuteron's extra bonus energy. The effect of fuel temperature on the BF probability in contaminated DT fuel is discussed. Calculations show that increasing the temperature enhanced BF probability.

中文翻译：

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非活性杂质离子对氘核聚变快点火方法的影响

激光产生的氘核束是一种很有前途的方案，可以在惯性约束聚变方法中的快速点火方法中为点燃预压缩燃料提供所需的能量。氘核束在预压缩燃料中的热点形成过程中通过束聚变 (BF) 反应提供额外的能量。在压缩和热点形成阶段，由于燃料与目标结构元件材料的混合，会产生杂质。因此，研究了在任意浓度杂质（如铍、碳、铝和金）存在下，氘核束在球形氘氚（DT）燃料中的BF效率。氘核束在 3 MeV 温度下被认为具有麦克斯韦能量分布，它通过具有不均匀密度分布的预压缩污染DT燃料。这表明混合离子电荷态和密度比的增加导致氘核BF概率的显着降低，从而导致氘核的额外额外能量减少。讨论了燃料温度对受污染 DT 燃料中 BF 概率的影响。计算表明，提高温度会提高 BF 概率。