Single-particle and collective motions from nuclear many-body correlation (PCM2025)

Session

session #1

4 Mar 2025, 10:10

Main Lecture Hall (University of Aizu)

Conveners

session #1

• Muhsin Harakeh

82. Single-particle states in odd nuclei and spin-isospin excitations

Prof. Gianluca Colò (University of Milan)

04/03/2025, 10:10

25. Study of Gamow-Teller giant resonances in unstable nuclei at RIBF

Dr Masaki Sasano (RIKEN Nishina Center)

04/03/2025, 10:35

The Gamow-Teller giant resonance is one of the most basic collective modes in nuclei and belongs to the spin-isospin (pion) channel. This mode has long been studied for stable nuclei to clarify a variety of nuclear properties such as the behavior of spin-isospin residual interactions, nuclear weak responses. Recently, with the advent of RI falicities worldwide, the study of GTR has been...

3. Quenching of Gamow-Teller and forbidden transition strength

Toshio Suzuki (Nihon University)

04/03/2025, 10:55

Gamow-Teller (GT) strengths in medium and heavy nuclei in the giant-resonance region are suppressed compared to the Ikeda sum rule [1,2]. GT strengths in low-lying states in sd-shell and pf-shell nuclei, for example, have also been found to be suppressed: the quenching factors for the axial-vector coupling, $q_A=g_A^{eff}/g_A^{free}$, are $\sim$0.77 and $\sim$0.74 for $sd$-shell [3] and...

2. Theoretical study of the Isovector Monopole Resonance

Javier Roca Maza (University of Barcelona and University of Milan)

04/03/2025, 11:15

Motivated by the experimental and theoretical interest on the Isovector Monopole Resonance, I will present a theoretical study of the charge-exchange and non-charge exchange Isovector Monopole Resonances in 48Ca, 90Zr and 208Pb calculated within the RPA approach. I will focus on their excitation energy and sum rules and discuss the possibility to relate them with the ground state properties of...