The African Nuclear Physics Conference 2023 (ANPC2023)

Toroidal dipole mode in nuclei and other systems

Not scheduled

20m

Oral Nuclear Structure, Reactions and Dynamics

Speaker

Prof. Valentin Nesterenko (Joint Institute for Nuclear Research (Dubna, Russia))

Description

V.O. Nesterenko

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia

A toroidal dipole mode is a general phenomenon pertinent to both classical and quantum systems. In conventional fluid dynamics, this turbulence-induced mode is associated with the simplest vortical flow called Hill’s vortex [1]. In solid-body physics [2], nanophysics and metamaterials [3] this is a second-order E1 effect leading to fantastic applications of the microwave-infrared fields [2,3].

During last decades, the toroidal E1 mode in nuclei attracts a high attention [4-10]. Its nuclear realization can give a fundamentally new information on the properties of this mode. I give a short review on the toroidal dipole in various systems and report a recent progress in investigation of E1 toroidal resonance in nuclei (interplay of the toroidal and pygmy E1 resonances [6], individual low-energy E1 toroidal states in light deformed nuclei [7,8], relation with cluster modes in light nuclei [9], toroidal resonance and nuclear vorticity, possible ways for identification of individual toroidal states in experiment [10]).

[1] M.J.M. Hill, Phil. Trans. Roy. Soc., A185, 213 (1984).
[2] V.M. Dubovik and V.V. Tugushev, Phys. Rep. 187, 145 (1990).
[3] T. Kaelberer, V.A. Fedotov, N. Papasimakis, D.P. Tsai and N.I. Zheludev, Science 330, 1510
(2010).
[4] V.O. Nesterenko, J. Kvasil, A. Repko, W. Kleinig, and P.-G. Reinhard, Phys. Atom. Nucl. 79,
842 (2016).
[5] A. Repko, V.O. Nesterenko, J. Kvasil, and P.-G. Reinhard, Eur. Phys. J. A55, 242 (2019).
[6] A. Repko, P.-G. Reinhard, V.O. Nesterenko, and J. Kvasil, Phys. Rev. C87, 024305 (2013).
[7] V.O. Nesterenko, A. Repko, J. Kasil, and P.-G. Reinhard, Phys. Rev. Lett. 120, 182501 (2018).
[8] Yoshiko Kanada-En'yo and Yuki Shikata, Phys. Rev. C95 064319 (2017).
[9] P. Adsley, V.O. Nesterenko, et al, Phys. Rev. C103, 044315 (2021).
[10] V.O. Nesterenko, A. Repko, J. Kvasil, and P.-G. Reinhard, Phys. Rev. C100, 064302 (2019).