\(\alpha \)-decay half-life predictions for superheavy elements through machine learning techniques

IF 2.6 3区 物理与天体物理 Q2 PHYSICS, NUCLEAR
S. Madhumitha Shree, M. Balasubramaniam
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Abstract

The stability and synthesis of superheavy nuclei are critically influenced by the accurate prediction of \(\alpha \)-decay half-lives. As an alternative to traditional models and empirical formulae, we employ the XGBoost machine learning algorithm for predicting the \(\alpha \)-decay half-lives of superheavy nuclei. For training the machine learning algorithm, the experimental half-lives of 344 nuclides in the mass range of 106 \(\le A \le 261\) and atomic numbers \(52 \le Z \le 107\) are used. Intricate correlations between nuclear features (Q value of the decay, mass, charge, neutron numbers) and half-lives are developed while training the XGBoost model with existing experimental data. The model performance is then assessed by comparing the predictions with experimental data and other empirical estimates. The trained model is found to have the least mean square deviation with respect to other empirical formulae. The trained model is then used to calculate the half lives of superheavy nuclei. The obtained results indicate that, in the superheavy element (SHE) region, XGBoost makes very effective predictions for the \(\alpha \)-decay half-lives. The impact of physics features is demonstrated with SHAP (SHapley Additive exPlanations) summary plots.

Abstract Image

\通过机器学习技术预测超重元素的(α)衰变半衰期
准确预测\(\alpha \)衰变半衰期对超重核的稳定性和合成有重要影响。作为传统模型和经验公式的替代方案,我们采用XGBoost机器学习算法来预测超重核的\(\alpha \) -衰变半衰期。为了训练机器学习算法,使用了质量范围为106 \(\le A \le 261\)和原子序数\(52 \le Z \le 107\)的344种核素的实验半衰期。在使用现有实验数据训练XGBoost模型时,开发了核特征(衰变Q值、质量、电荷、中子数)与半衰期之间复杂的相关性。然后通过将预测与实验数据和其他经验估计进行比较来评估模型的性能。发现训练模型相对于其他经验公式具有最小的均方差。然后用训练好的模型计算超重核的半衰期。所得结果表明,在超重元素(SHE)区域,XGBoost对\(\alpha \) -衰变半衰期的预测非常有效。物理特征的影响用SHapley加性解释(SHapley Additive explanation)总结图来说明。
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来源期刊
The European Physical Journal A
The European Physical Journal A 物理-物理:核物理
CiteScore
5.00
自引率
18.50%
发文量
216
审稿时长
3-8 weeks
期刊介绍: Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.
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