Электронный каталог

Статья

Seif, W.M.
Role of Internal Kinetic Energy in the Surface Density-Overlap Region of Fusing Nuclei / W.M.Seif, V.V.Sargsyan, G.G.Adamian, N.V.Antonenko. – Text: electronic // Physical Review C. – 2025. – Vol. 111, No. 4. – P. 044307. – URL: https://doi.org/10.1103/PhysRevC.111.044307.

The density overlap between two interacting nuclei results in a change of the internal kinetic energy, which magnifies a repulsive contribution. We investigated to what extent the internal kinetic energy can be calculated using the extended Thomas-Fermi approximation (ETF) with inhomogeneous terms and with surface corrections. The complete fusion reactions involving light and heavy nuclei from *1*6O to *2*0*8Pb are considered as examples. The fusion excitation function is calculated in the framework of the extended quantum diffusion model, using a nucleus-nucleus interaction potential based on the Skyrme energy-density functional. We found that both the fixed strengths of the inhomogeneous terms of the ETF approximation and its semiclassical expansion up to ℏ2 (ETF2) fail to correctly describe the complete fusion process and, thus, the Coulomb barrier parameters. The density and mass-number dependencies for the strengths of these inhomogeneous terms of the internal kinetic-energy density functions are suggested, with which the fusion cross sections are successfully reproduced.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 343 а - Теория ядерных реакций. Различные модели: статистическая, оптическая, резонансная
Бюллетени = 25/025