We investigate the three-body Coulomb breakup of a two-neutron halo nucleus, 6He. Based on the α+n+n model, the three-body scattering states of 6He are described by using the combined methods of the complex scaling and the Lippmann-Schwinger equation. We calculate the breakup cross section, the two-dimensional energy distributions, and the invariant mass spectra for the E1 transition of 6He. We discuss the relations between the structures in these strengths and the n-n and α-n correlations of 6He. It is found that the 5He resonance in the final states contributes to make a low-energy enhancement of the strength. The n-n final-state interaction also contributes to enhance the strength globally. However, the ground-state correlations of 6He, such as a dineutron, are difficult to recognize in the strength because of the dominant effect of the final-state interaction.
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机译：我们研究了两个中子晕核6He的三体库仑破裂。在α+ n + n模型的基础上，采用复标度和Lippmann-Schwinger方程相结合的方法描述了6He的三体散射态。我们计算了6He的E1跃迁的破裂截面，二维能量分布和不变质谱。我们讨论了这些强度的结构与6He的n-n和α-n相关性之间的关系。发现在最终状态下的5He共振有助于使强度的低能量增强。 n-n个最终状态的交互作用也有助于增强全局强度。但是，由于最终状态相互作用的主导作用，很难在强度上识别6He（例如中子）的基态相关性。
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