Phenomenological methods for atomic nuclei masses evaluation in drip lines area

13 Nov 2020, 14:45
15m
Oral Nuclear Physics Nuclear Physics

Speaker

Elena Vladimirova (Lomonosov Moscow State University, Faculty of Physics)

Description

In this work we obtain theoretical nuclear masses (or binding energy) and localize proton and neutron drip lines using method of local mass relations. This method demonstrates good applicability for atomic mass predictions [1, 2, 3]. For estimates we use an approximation of the formula that describes the residual np-interaction, the features of which were discussed in detail in the previous work [4].
In addition, we show results obtained by a completely different method – machine learning based on support vector regression. We predict the specific binding energies based on the specific binding energies of several neighboring nuclei and run several iterations of machine learning to reach an area far from the stability line.
Comparison with estimates of other works, which are based on other approaches, showed reliable accuracy of the results obtained.

  1. D. Lunney et al. // Rev. Mod. Phys. 2003 75 1021.
  2. H. Jiang et al. // Phys. Rev. C 2012 85, 054303.
  3. J. Janecke et al. // At. Data and Nucl. Data Tabl. 1988. 39 265 271.
  4. B. S. Ishkhanov et al. // Chinese Phys. C 2019 43 014104.

Primary authors

Elena Vladimirova (Lomonosov Moscow State University, Faculty of Physics) Dr Tatiana Tretyakova Makar Simonov (Moscow State University)

Presentation materials