Using lattice effective field theory, the authors compute spectra, radii, and electromagnetic transitions for 7Be to 12Be and extract cluster, halo, and molecular-orbital structures from the many-body density.
Cluster Structures of the Ground and Excited States of 12Be Studied with Antisymmetrized Molecular Dynamics
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abstract
The structures of the ground and excited states of 12Be were studied with antisymmetrized molecular dynamics. The ground state was found to be a state with a developed 2-alpha core with two neutrons occupying the intruder orbits. The energy levels of the newly measured spin-assigned states were described well, except for the $1^-_1$ state. The calculations indicated that many exotic cluster structures appear in the low-energy region. The widths concerning alpha and 6He decays were discussed by using reduced width amplitudes.
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Ab initio study of the beryllium isotopes $^{7}$Be to $^{12}$Be
Using lattice effective field theory, the authors compute spectra, radii, and electromagnetic transitions for 7Be to 12Be and extract cluster, halo, and molecular-orbital structures from the many-body density.