Valence Neutron-Proton Orientation in Atomic Nuclei
Abstract
It is shown that the renormalized nuclear deformations in different mass regions can be globally scaled by two probability partition factors of Boltzmann-like distribution, which are derived from the competing valence and like-nucleon interactions. The partition factors are simply related to the probabilities of anti-parallel and fully-aligned orientations of the angular momenta of the neutrons and protons in the valence pairs, responsible for spherical- and deformed-shape phases, respectively. The partition factors derived from the renormalized deformations are also present in the new scaling law for the energies of the first states. A striking concordance between the distributions of the renormalized deformations and of the newly introduced parameter for the energies of the first states over the extended mass region from Ge to Cf is achieved, giving strong support to the existence of two phases: anti-aligned and fully-aligned subsets of pairs.
Cite
@article{arxiv.1905.04633,
title = {Valence Neutron-Proton Orientation in Atomic Nuclei},
author = {J. G. Wang and M. L. Liu and C. M. Petrache and K. K. Zheng and X. H. Zhou and Y. H. Zhang},
journal= {arXiv preprint arXiv:1905.04633},
year = {2019}
}