Di-neutron correlation in light neutron-rich nuclei

Details Di-neutron correlation in light neutron-rich nuclei Di-neutron correlation in light neutron-rich nuclei

2008-12-03

arxiv.org/abs/0812.0658v1

Int.J.Mod.Phys.E18:2045-2049,2009

Physics

Nuclear Physics

Nuclear Theory

A talk given at Franco-Japanese symposium on "New Paradigms in Nuclear Physics", Sep. 29-Oct. 2, 2008, Paris, France

Scientific paper

10.1142/S0218301309014263

Using a three-body model with density-dependent contact interaction, we discuss the root mean square distance between the two valence neutrons in $^{11}$Li nuclues as a function of the center of mass of the neutrons relative to the core nucleus $^9$Li. We show that the mean distance takes a pronounced minimum around the surface of the nucleus, indicating a strong surface di-neutron correlation. We demonstrate that the pairing correlation plays an essential role in this behavior. We also discuss the di-neutron structure in the $^8$He nucleus.

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