The yields of light elements (\(Z=1,2\)) obtained from spontaneous ternary fission of \(^{252}\)Cf are treated within a nonequilibrium approach, and the contribution of unstable nuclei and excited bound states is taken into account. These light cluster yields may be used to probe dense matter, and to infer in-medium corrections such as Pauli blocking which is determined by the nucleon density. Continuum correlations are calculated from scattering phase shifts using the Beth-Uhlenbeck formula, and the effect of medium modification is estimated. The relevant distribution is reconstructed from the measured yields of isotopes. This describes the state of the nucleon system at scission and cluster formation, using only three Lagrange parameters which are the nonequilibrium counterparts of the temperature and chemical potentials, as defined in thermodynamic equilibrium. We concluded that a simple nuclear statistical equilibrium model neglecting continuum correlations and medium effects is not able to describe the measured distribution of H and He isotopes. Moreover, the freeze-out concept may serve as an important ingredient to the nonequilibrium approach using the relevant statistical operator concept.

从\（^ {252} \）的自发三元裂变获得的轻元素（\（Z = 1,2 \））的产量Cf采用非平衡方法处理，并考虑了不稳定核和激发束缚态的贡献。这些轻簇的产量可用于探测稠密物质，并推断中等浓度的校正，例如由核子密度决定的泡利封闭。使用Beth-Uhlenbeck公式根据散射相移计算出连续相关性，并估算了介质修饰的效果。根据分布的同位素产量重建相关分布。它仅使用三个拉格朗日参数（在热力学平衡中定义为温度和化学势的非平衡对等物）描述了分裂和簇形成时核子系统的状态。我们得出的结论是，忽略连续性相关性和介质效应的简单核统计平衡模型无法描述H和He同位素的测量分布。此外，使用相关的统计算子概念，冻结概念可以作为非均衡方法的重要组成部分。