Two-neutron overlap functions for 6He from a microscopic structure model

被引：21

作者：

Brida, I. ^{[1
,2
,3
]}

Nunes, F. M. ^{[2
,3
]}

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[2] Michigan State Univ, NSCL, E Lansing, MI 48824 USA

[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

来源：

NUCLEAR PHYSICS A | 2010年 / 847卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

He-6; Halo nuclei; Overlap functions; Spectroscopic factors; MONTE-CARLO CALCULATIONS; QUANTUM; DEPENDENCE; NUCLEON; RADIUS;

D O I：

10.1016/j.nuclphysa.2010.06.012

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A fully antisymmetrized microscopic model is developed for light two-neutron halo nuclei using a hyper-spherical basis to describe halo regions. The many-body wavefunction is optimized variationally The model is applied to He-6 bound by semi realistic Minnesota nucleon-nucleon forces The two-neutron separation energy and the radius of the halo are reproduced in agreement with experiment Antisymmetrization effects between He-4 and halo neutrons are found to be crucial for binding of He-6. We also properly extract two-neutron overlap functions and find that there is a significant increase of 30%-70% in their normalization due to microscopic effects as compared to the results of three-body models. (C) 2010 Elsevier B.V All rights reserved,

引用

页码：1 / 23

页数：23

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