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arXiv 0906.4182nucl-th
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奇异核中的两种中子关联

Two neutron correlations in exotic nuclei

H. Sagawa K. Hagino

摘要:

本文用密度依赖接触两体相互作用的三体模型研究了双原子核$^{11}$ Li和$^6$ He中两个中子之间的关联。结果表明,由于不同宇称的单粒子态的混合,两个中子在核表面表现出紧密的束缚特征。我们用同样的三体模型研究了$^{11}$ Li和$^6$ He的库仑破裂截面。我们表明,浓度的B(E1)强度附近的阈值可以很好地再现与此模型作为一个典型的性质晕核。利用偶极激发的关联波函数研究了偶极激发的两个发射中子的能量分布。

英文摘要:

We study the correlations between two neutrons in borromian nuclei $^{11}$Li and $^6$He by using a three-body model with a density-dependent contact two-body interaction. It is shown that the two neutrons show a compact bound feature at the nuclear surface due to the mixing of single particle states of different parity. We study the Coulomb breakup cross sections of $^{11}$Li and $^6$He using the same three-body model. We show that the concentration of the B(E1) strength near the threshold can be well reproduced with this model as a typical nature of the halo nuclei. The energy distributions of two emitted neutrons from dipole excitations are also studied using the correlated wave functions of dipole excitations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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