Institute of Physics Ministry of Science and Education Republic of Azerbaijan

THE ROLE OF COULOMB POTENTIAL IN ELECTROMAGNETIC TRANSITIONS

I.G. Afandiyeva

ABSTRACT

Studies conducted on a range of rare-earth nuclei indicate that the Coulomb potential plays a significant role in electromagnetic transitions, particularly at low energies. In this regime, it acts to inhibit the interaction between the proton and the nucleus. The inclusion of the long-range Coulomb interaction alongside the short-range nuclear potential leads to substantial modifications in the asymptotic behavior of the wave functions, which in turn affects the matrix elements of the electromagnetic operators. Even a slight increase in the spatial extent of the wave functions results in an enhancement of the electric quadrupole E2 matrix elements. Furthermore, the Coulomb repulsion between protons increases the difference in charge radii between the ground and excited states, thereby amplifying the matrix element of the monopole E0 operator.

Keywords: electromagnetic transitions, Coulomb potential, direct nuclear reaction.
DOI:10.70784/azip.1.2025309

Received: 25.06.2025
Internet publishing: 07.07.2025 AJP Fizika E 2025 03 en p.09-11

AUTHORS & AFFILIATIONS

Department of Physics, Azerbaijan State University of Oil and Industry, Baku, Azerbaijan
E-mail: afandiyeva.irada@asoiu.edu.az

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