Low-Energy Nuclear Physics Seminar

(sectors No.1 and 2 of the scientific department of nuclear theory)

Date and Time: Tuesday, 22 September 2020, at 11:00 AM

Venue: Online conference in Zoom, Bogoliubov Laboratory of Theoretical Physics

Seminar topic: «Self-consistent calculation of the charge radii in the isotopic chain ⁵⁸⁻⁸²Cu»

Authors: I. N. Borzov^1,2, S. V. Tolokonnikov^1,2

1 – National Research Centre “Kurchatov Institute”, Moscow
2 – Bogoliubov Laboratory of Theoretical Physics, JINR
3 – Moscow Institute of Physics and Technology (State University), Dolgoprudny

Speaker: I. N. Borzov

Abstract:

The charge radii in a long isotopic chain of copper, including exotic nuclei ⁵⁸Cu, ⁷⁹Cu close to doubly-magic ⁵⁶Ni, ⁷⁸Ni and nuclei near magic sub-shells N = 32, 34, 40 are calculated. The self-consistent theory of finite Fermi systems and the family of density energy functionals proposed by Fayans et al. (DF3, DF3-a) are used. A comparison is made with experiment and similar calculations in self-consistent models using new versions of the Fayans functional with parameters obtained using the extended optimization protocol: Fy (std) and Fy (HFB, ∇r), as well as with calculations in the renormalization group method and with density-dependent spinorbit interaction. The weakening of the even-odd “staggering” in isotopes approaching the semi-magic nucleus of ⁷⁹Cu found in ISOLDE-CERN experiments is analyzed. The correlation of the isotopic dependences of charge radii and total beta decay energies is shown.