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在局域热动平衡近似下,利用能量平衡关系,建立热核系统整体点火能量平衡方程,对该方程求解得到热核反应系统点火阈值.在计算和分析的基础上给出参数空间的点火关系,以及该条件受装量、核子数比以及返照率等因素的影响情况.点火时刻面密度越大,则对应的点火温度越低,并且电子-辐射温度脱离越小,越接近三温平衡的点火状态;反之则在点火时刻对应较大温度脱离.更重要的是,该分析方法还可以根据点火时刻系统的物理状态,通过线性稳定性分析方法,描述出系统的后续行为,也就是说,可以判断出这样的热核系统能否继续升温并实现深度燃烧.
In the local thermal equilibrium approximation, the energy balance equation is used to establish the overall ignition energy balance equation of the thermonuclear system, and the ignition threshold of the thermonuclear reaction system is obtained by solving this equation.According to the calculation and analysis, And the condition of loading capacity, the number of nucleons and the rate of return, etc. The greater the areal density at ignition, the lower the corresponding ignition temperature, and the smaller the electron-radiation temperature, the closer to the three-temperature equilibrium ignition State, and vice versa at the ignition temperature corresponds to a larger temperature detachment.More importantly, the analysis method can also be based on the physical state of the system at the time of ignition, through the linear stability analysis method, describes the system’s follow-up behavior, that is, To determine whether such a thermonuclear system can continue to heat up and achieve deep combustion.