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合理地给出了复合核反应光子穿透系数及同质异能态俘获截面的计算公式，其中包括统计和非统计过程．通过求解级联γ退激过程计算光子穿透系数，既合理地扣除（ｎ，γｎ）过程，又包括首次γ跃迁至中子分离能Ｂｎ以上能级的贡献．以４ＭｅＶ以下中子和５９Ｃｏ及１０３Ｒｈ的反应为例，比较用不同方法计算的光子穿透系数，计算同质异能态俘获截面并和实验数据进行比较，最后对结果进行了分析和讨论．
The calculation formulas of photon penetration coefficient and the capture cross section of isomorphic energy in complex nuclear reactions are given reasonably, including statistical and non-statistical processes. By calculating the photon penetration coefficient by solving the cascade γ retarder process, the (n, γn) process is reasonably deduced and the contribution of the first γ transition to the energy level above the Bn of the neutron separation energy is also included. Taking the reaction of 4MeV neutrons and 59Co and 103Rh as examples, the photon transmissivity calculated by different methods was compared to calculate the cross-section of isomeric energy trapping and to compare with the experimental data. Finally, the results were analyzed and discussed.