Nuclear -decay half-lives are predicted based on an empirical formula and the mass predictions from various nuclear models. It is found that the empirical formula can reproduce the nuclear -decay half-lives well, especially for short-lived nuclei with s. The theoretical half-life uncertainties from -decay energies and the parameters of the empirical formula are further investigated. It is found that the uncertainties of the half-lives are relatively large for heavy nuclei and nuclei near the neutron-drip line. For nuclei on the r-process path, the uncertainties for those with are about one order of magnitude, which are much larger than the uncertainties for those with and . However, theoretical uncertainties from the parameters of the empirical formula are relatively small for the nuclei on the r-process path, which indicates that the empirical formula is very suitable for predicting the -decay half-lives in r-process simulations.

基于经验公式和各种核模型的质量预测来预测核衰变半衰期。发现经验公式可以很好地再现核衰变的半衰期，特别是对于具有s 的短寿命核。进一步研究了来自衰变能量的理论半衰期不确定性和经验公式的参数。发现重核和中子滴线附近的核半衰期的不确定性较大。对于r过程路径上的原子核，具有 的不确定性大约是一个数量级，比具有和. 然而，经验公式参数的理论不确定性对于r过程路径上的原子核相对较小，这表明经验公式非常适合预测r过程模拟中的衰变半衰期。