Experimental study of the two-body spin-orbit force
Abstract
Energies and spectroscopic factors of the first , , and states in the Si nucleus were determined by means of the (d,p) transfer reaction in inverse kinematics at GANIL using the MUST2 and EXOGAM detectors. By comparing the spectroscopic information on the Si and S isotones, a reduction of the spin-orbit splitting by about 25% is proposed, while the spin-orbit splitting seems to remain constant. These features, derived after having unfolded nuclear correlations using shell model calculations, have been attributed to the properties of the 2-body spin-orbit interaction, the amplitude of which is derived for the first time in an atomic nucleus. The present results, remarkably well reproduced by using several realistic nucleon-nucleon forces, provide a unique touchstone for the modeling of the spin-orbit interaction in atomic nuclei.
Cite
@article{arxiv.1401.1593,
title = {Experimental study of the two-body spin-orbit force},
author = {G. Burgunder and O. Sorlin and F. Nowacki and S. Giron and F. Hammache and M. Moukaddam and N. De S er eville and D. Beaumel and L. C aceres and E. Cl ément and G. Duchêne and J. P. Ebran and B. Fernandez-Dominguez and F. Flavigny and S. Franchoo and J. Gibelin and A. Gillibert and S. Gr évy and J. Guillot and V. Lapoux and A. Lepailleur and I. Matea and A. Matta and L. Nalpas and A. Obertelli and T. Otsuka and J. Pancin and A. Poves and R. Raabe and J. A. Scarpaci and I. Stefan and C. Stodel and T. Suzuki and J. C. Thomas},
journal= {arXiv preprint arXiv:1401.1593},
year = {2015}
}
Comments
5 pages, 3 figures, accepted for publication in Physical Review Letters