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9Be: A gateway nucleus into heavier nuclei? | | Y. Koike
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26 Dec 2001 | | Subject: | nucl-th | | Affiliation: | Hosei U. | | Abstract: | Level structure of 9Be is investigated calculating poles of the alpha alphar n three-body scattering amplitude in the complex energy plane. We find 10 levels, which make rotational bands in both positive and negative parities. All of them, except 7/2^+, have been observed experimentally and the corresponding positions and widths reasonably well matched. The 7/2^+ has a large width, and therefore has not been found, but may cause a noise in the experiment. No other levels are needed to explain the existing experimental observables below 11.28 MeV, where the 9th excited state exists. We definitely assign it 9/2^-. | | Source: | arXiv, nucl-th/0201075 | | Services: | Forum | Review | PDF | Favorites | |
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