Candidate Toroidal Electric Dipole Mode in the Spherical Nucleus <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mmultiscripts> <mml:mrow> <mml:mi>Ni</mml:mi> </mml:mrow> <mml:mprescripts/> <mml:none/> <mml:mrow> <mml:mn>58</mml:mn> </mml:mrow> </mml:mmultiscripts> </mml:mrow> </mml:math>
P. von Neumann–Cosel, V. O. Nesterenko, I. Brandherm, P. I. Vishnevskiy, P.‐G. Reinhard, J. Kvasil, Hiroaki Matsubara, A. Repko, A. Richter, M. Scheck, A. Tamii
Abstract
Dipole toroidal modes appear in many fields of physics. In nuclei, such a mode was predicted more than 50 years ago, but clear experimental evidence was lacking so far. Using a combination of high-resolution inelastic scattering experiments with photons, electrons, and protons, we identify for the first time candidates for toroidal dipole excitations in the nucleus ^{58}Ni and demonstrate that transverse electron scattering form factors represent a relevant experimental observable to prove their nature.
Topics & Concepts
PhysicsToroidDipoleComputer scienceQuantum mechanicsPlasmaNuclear physics research studiesAtomic and Molecular PhysicsMuon and positron interactions and applications