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Investigation of ${}^9$Be from nonlocalized clustering concept
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abstract
The nonlocalized aspect of clustering, which is a new concept for self-conjugate nuclei, is extended for the investigation of the N{\not=}Z nucleus ${}^9$Be. A modified version of the THSR (Tohsaki-Horiuchi-Schuck-R\"opke) wave function is introduced based on the container picture. It is found that the constructed negative-parity THSR wave function is very suitable for describing the cluster states of ${}^9$Be. Namely the nonlocalized clustering is shown to prevail in ${}^9$Be. The calculated binding energy and radius of ${}^9$Be are consistent with calculations in other models and with experimental values. The squared overlaps between the THSR wave function and the Brink+GCM wave function for the $3/2^-$ rotational band of ${}^9$Be are found to be near 96%. Furthermore, by showing the density distribution of the ground state of ${}^9$Be, the {\pi}-orbit structure is naturally reproduced by using this THSR wave function.
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Cited by 1 Pith paper
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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.
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