Speaker
Description
I. N. Borzov 1), 2)*, S. V. Tolokonnikov 1), 3)
1) National Research Center “Kurchatov Institute", Moscow, Russia.
2) Bogolubov Laboratory of Theoretical Physics, JINR, Dubna, Russia.
3) Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia.
The strength functions of charge exchange spin-dipole (SD) excitations are calculated in the continuum quasiparticle random-phase approximation based on the Fayans density functional DF3-f with modified isovector part [1]. An impact of the isovector parameter h2− of the functional on the charge-exchange spin-dipole excitations (0-, 1-, 2-) are studied for 208Pb, 132Sn and 90Zr. The sum rules are calculated using both ground state radii and direct integration of the total SD strength distributions [2]. A comparison with the experimental SD sum rule in 90Zr [3] gives one an additional possibility to check previously estimated h2− values [1] which described well the recent combined estimate for the neutron skin thickness ∆Rnp in 208Pb and corresponding parameters of nuclear matter equation of state - symmetry energy J (ρ0) and a slope parameter L (ρ0) [4].
1. I.N. Borzov, S.V. Tolokonnikov, Physics of Atomic Nuclei 86 (3) 304-309 (2023).
2. Shi-Hui Cheng, JingWen, Li-Gang Cao, Feng-Shou Zhang, Chin. Phys. C 47, 024102 (2023).
3. K. Yako, H. Sagawa, and H. Sakai, Phys. Rev. C 74, 051303 (2006).
4. R. Essick, P. Landry, A. Schwenk, and I. Tews, Phys. Rev. 104, 065804 (2021).
| Section | Nuclear structure: theory and experiment |
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