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arXiv 0905.1541nucl-th
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Lippmann-Schwinger方程复尺度解中的库仑破裂反应

Coulomb Breakup Reactions in Complex-Scaled Solutions of the Lippmann-Schwinger Equation

Yuma Kikuchi, Takayuki Myo, Masaaki Takashina, Kiyoshi Kato, Kiyomi Ikeda

摘要:

本文提出了一种描述核三体破裂的新方法,该方法结合复标度法求解Lippmann-Schwinger方程。Lippmann-Schwinger方程(CSLS)的复尺度解使我们能够正确地处理多体明渠的边界条件,并从基态描述多体破裂振幅。用CSLS方法计算了从6 He基态到4 He +n+n三体衰变态的库仑破碎截面随总激发能的变化,计算结果与实验数据吻合较好.此外,还得到了E1跃迁强度的二维能量分布,证实了5 He(3/2-)共振的重要性。结果表明,CSLS是研究弱束缚核三体破裂反应中各子系统关联的一种很有前途的方法。

英文摘要:

We propose a new method to describe three-body breakups of nuclei, in which the Lippmann-Schwinger equation is solved combining with the complex scaling method. The complex-scaled solutions of the Lippmann-Schwinger equation (CSLS) enables us to treat boundary conditions of many-body open channels correctly and to describe a many-body breakup amplitude from the ground state. The Coulomb breakup cross section from the 6He ground state into 4He+n+n three-body decaying states as a function of the total excitation energy is calculated by using CSLS, and the result well reproduces the experimental data. Furthermore, the two-dimensional energy distribution of the E1 transition strength is obtained and an importance of the 5He(3/2-) resonance is confirmed. It is shown that CSLS is a promising method to investigate correlations of subsystems in three-body breakup reactions of the weakly-bound nuclei.

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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