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本文从准线性理论出发，导出了ＩＣＲＦ二倍频加热时对磁面平均的吸收功率密度的近似解析表达式，并指出了这一近似的适用范围。采用冷等离子体近似计算波的色散关系，利用ＥＰＰＡＣ程序求解二维时间相关Ｆｏｋｋｅｒ－Ｐｌａｎｃｋ方程，分析了氚的二倍频加热。对于典型的氘氚聚变反应堆参数，计算了等离子体各组分温度随时间的变化及氚的分布函数随时间的演化，并分析了氚的非麦氏分布及相关的氘氚聚变反应率。结果表明，对于反应堆规模的等离子体来说，ＩＣＲＦ加热只在温度不太高时才导致明显的非麦氏分布及氘氚聚变反应率提高；在等离子体温度提高到约１０ｋｅＶ后，反应率不再有明显的提高
Based on the quasi-linear theory, this paper derives an approximate analytic expression of the average absorbed power density of the magnetic surface during ICRF double frequency heating, and points out the applicable scope of this approximation. The chromatic dispersion of the wave was calculated by cold plasma approximation. The two-dimensional time-dependent Fokker-Planck equation was solved by EPPAC program, and the second harmonic heating of tritium was analyzed. For a typical deuterium-tritium fusion reactor, the temperature of each component of the plasma and the evolution of the distribution function of tritium over time are calculated. The non-Maxwell distribution of tritium and the related fusion reaction rates of deuterium, tritium and tritium are also analyzed. The results show that for reactor-scale plasma, ICRF heating leads to significant non-McMurray distribution and higher fusion reaction rate of deuterium, tritium and tritium only when the temperature is not too high; after the plasma temperature is increased to about 10 keV, the reaction rate is not Then there is a clear increase