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arXiv · 1309.0407

Radial basis function approach in nuclear mass predictions

Z. M. Niu·Z. L. Zhu·Y. F. Niu·B. H. Sun·T. H. Heng·J. Y. Guo
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Abstract

The radial basis function (RBF) approach is applied in predicting nuclear masses for 8 widely used nuclear mass models, ranging from macroscopic-microscopic to microscopic types. A significantly improved accuracy in computing nuclear masses is obtained, and the corresponding rms deviations with respect to the known masses is reduced by up to 78%. Moreover, strong correlations are found between a target nucleus and the reference nuclei within about three unit in distance, which play critical roles in improving nuclear mass predictions. Based on the latest Weizsäcker-Skyrme mass model, the RBF approach can achieve an accuracy comparable with the extrapolation method used in atomic mass evaluation. In addition, the necessity of new high-precision experimental data to improve the mass predictions with the RBF approach is emphasized as well.

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Z. M. Niu, Z. L. Zhu, Y. F. Niu, B. H. Sun, T. H. Heng, J. Y. Guo. 2013-09-02. Radial basis function approach in nuclear mass predictions. https://doi.org/10.1103/physrevc.88.024325

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