Difference between stable and exotic nuclei: medium polarization effects
Nuclear Theory
2012-02-14 v1
Abstract
The bare NN-potential, parametrized so as to reproduce the nuclear phase shifts leads to a sizable Cooper pair binding energy in nuclei along the stability valley. It is a much debated matter whether this value accounts for the "empirical" value of the pairing gap or whether a similarly important contribution arises from the exchange of collective vibrations between Cooper pair partners. In keeping with the fact that two-particle transfer reactions are the specific probe of pairing in nuclei, and that exotic halo nuclei like 11Li are extremely polarizable, we find that the recent studied reaction, namely 11Li+p -> 9Li+t, provides direct evidence of phonon mediated pairing in nuclei.
Keywords
Cite
@article{arxiv.1001.1057,
title = {Difference between stable and exotic nuclei: medium polarization effects},
author = {R. A. Broglia and G. Potel and F. Barranco and E. Vigezzi},
journal= {arXiv preprint arXiv:1001.1057},
year = {2012}
}