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arXiv · 1001.1057

Difference between stable and exotic nuclei: medium polarization effects

R. A. Broglia·G. Potel·F. Barranco·E. Vigezzi
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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.

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R. A. Broglia, G. Potel, F. Barranco, E. Vigezzi. 2010-01-07. Difference between stable and exotic nuclei: medium polarization effects. https://doi.org/10.1088/0954-3899%2F37%2F6%2F064022

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