The role of nuclear reactions and α-particle transport in the dynamics of inertial confinement fusion capsules
The role of nuclear reactions and α-particle transport in the dynamics of inertial confinement fusion capsules
复制标题
核反应和α粒子输运在惯性约束聚变胶囊动力学中的作用
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
C. Cherfils
中科院分区：
文献类型：
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作者：
J. Garnier;C. Cherfils
本文对惯性约束舱的减速段进行了研究。其目的是获得一个零维模型，该模型的形式是一个封闭的常微分方程系统的主要水动力量。该模型考虑了核反应释放的能量、α粒子能量沉积过程的非定域模型和电子韧致辐射损失。渐近分析的情况下，一个强的温度依赖性的热导率。最后，我们研究了停滞后的膨胀阶段的开始，推导出点火判据。
This paper is devoted to the study of the deceleration phase of inertial confinement capsules. The purpose is to obtain a zero-dimensional model that has the form of a closed system of ordinary differential equations for the main hydrodynamic quantities. The model takes into account the energy released by nuclear reactions, a nonlocal model for the α-particle energy deposition process, and radiation loss by electron bremsstrahlung. The asymptotic analysis is performed in the case of a strong temperature dependence of the thermal conductivity. We finally study the beginning of the expansion phase after stagnation to derive an ignition criterion.