Two-neutron halo nuclei in one dimension: dineutron correlation and breakup reaction
Two-neutron halo nuclei in one dimension: dineutron correlation and breakup reaction
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一维双中子晕核：双中子关联和分裂反应
DOI：
10.1088/0954-3899/38/1/015105
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
H. Sagawa
中科院分区：
文献类型：
--
作者：
K. Hagino;A. Vitturi;F. Pérez;H. Sagawa
我们提出了一个简单的双中子晕核模型。在这个模型中，两个价中子在一维平均场中运动，通过密度相关的接触相互作用相互作用。我们首先研究了基态性质，证明了由于奇偶宇称单粒子态的混合，这个简单的模型可以实现双中子态的关联。然后，我们求解了含时单体外场作用下的含时两粒子薛定谔方程，以讨论双中子关联对核分裂过程的影响。两粒子密度的时间演化表明，双中子关联提高了总的分裂几率，特别是对于两个价中子都被提升到连续散射态的双中子分裂过程。我们发现，两个粒子之间的相互作用肯定有利于两个出射粒子的空间关联，这两个出射粒子主要是在同一方向上发射的。
We propose a simple schematic model for two-neutron halo nuclei. In this model, the two valence neutrons move in a one-dimensional mean field, interacting with each other via a density-dependent contact interaction. We first investigate the ground-state properties and demonstrate that the dineutron correlation can be realized with this simple model due to the admixture of even- and odd-parity single-particle states. We then solve the time-dependent two-particle Schrodinger equation under the influence of a time-dependent one-body external field, in order to discuss the effect of dineutron correlation on nuclear breakup processes. The time evolution of two-particle density shows that the dineutron correlation enhances the total breakup probability, especially for the two-neutron breakup process, in which both the valence neutrons are promoted to continuum scattering states. We find that the interaction between the two particles definitely favors a spatial correlation of the two outgoing particles, which are mainly emitted in the same direction.
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影响因子：
3.1
作者：
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影响因子：
3.1
作者：
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通讯作者：
T. Myo;K. Katō;H. Toki;K. Ikeda
影响因子：
3.1
作者：
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