2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/199013N-αstructures of light nuclei with axial symmetry are studied using relativistic Hartree approximation. Metastable excited states are searched in a configuration space which allows linear alpha chain structures. As a result, it is shown that ^{12}C has ^8Be + αresonance state at about 1 MeV above ^8Be-αthreshold as an asymmetric 3-αlinear-chain structure, which plays an important role in stellar nucleosynthesis.3 pagesNuclear TheoryAstrophysicsHigh Energy Physics - PhenomenologyNuclear Experimenttext