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Abstract
The structures of the first excited states of mirror 9 Be and 9 B nuclei are studied by using the α + α + N three-body model and the complex scaling method. The resonance energy with a decay width of the 1/2 + state of 9 B is calculated by taking into account the consistency with photodisintegration cross sections of 9 Be into the 1/2 + state. We also compare the results with the measured data and other theories.
Highlights
A study of mirror nuclei plays an important role in understanding of the nuclear structure
It is interest to compare the structure of the 9Be(1/2+) state with the same spin-parity state of the mirror nucleus 9B [4]
Our purpose in this study is to investigate the energy with the decay width of the first excited 1/2+ state of 9B together with the mirror state in 9Be
Summary
A study of mirror nuclei plays an important role in understanding of the nuclear structure. The situation of its analog 9B(1/2+) state is unclear experimentally and theoretically. This state has been studied experimentally but there is considerable ambiguity of measured energies and decay widths [5, 6]. Recent updated information [8] and measurement [9] have reported the energy and width of the 9B(1/2+) state. A special attention must be paid on the determination of the 9B(1/2+) state by applying the appropriate theoretical model. Our purpose in this study is to investigate the energy with the decay width of the first excited 1/2+ state of 9B together with the mirror state in 9Be
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