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arXiv 0710.2945nucl-th
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用复标度法计算~ 7 He的共振

Resonances of 7He in the complex scaling method

Takayuki Myo, Kiyoshi Kato, Kiyomi Ikeda

摘要:

在4 He +n+n+n团簇模型中研究了~ 7 He的共振谱,其中价中子的运动用团簇轨道壳模型描述。在复标度法中,多体共振在正确的边界条件下被视为伽莫夫态。我们得到了五个共振态,并研究了它们的性质。特别地,在1.1 MeV的低激发能中发现了宽度为2.2 MeV的1/2态,而该态的位置的实验确定不是那么清楚。我们还评估了6 He-n组分的光谱因子在所获得的7 He共振。6 He(2+)态的重要性表现在7 He的几种态上。

英文摘要:

We study the resonance spectroscopy of 7He in the 4He+n+n+n cluster model, where the motion of valence neutrons is described in the cluster orbital shell model. Many-body resonances are treated on the correct boundary condition as the Gamow states in the complex scaling method. We obtain five resonances and investigate their properties from the configurations. In particular, the 1/2- state is found in a low excitation energy of 1.1 MeV with a width of 2.2 MeV, while the experimental determination of the position of this state is not so clear. We also evaluate the spectroscopic factors of the 6He-n components in the obtained 7He resonances. The importance of the 6He(2+) state is shown in several states of 7He.

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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