Bulg. J. Phys. vol.46 no.4 (2019), pp. 445-454

Ab initio Rotation in 10Be

M.A. Caprio1, P.J. Fasano1, A.E. McCoy2, P. Maris3, J.P. Vary3
1Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
2TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
3Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011-3160, USA
Abstract. Ab initio theory describes nuclei from a fully microscopic formulation, with no presupposition of collective degrees of freedom, yet signatures of clustering and rotation nonetheless arise. We can therefore look to ab initio theory for an understanding of the nature of these emergent phenomena. To probe the nature of rotation in 10Be, we examine the predicted rotational spectroscopy from no-core configuration interaction (NCCI) calculations with the Daejeon16 internucleon interaction, and find spectra suggestive of coexisting rotational structures having qualitatively different intrinsic deformations: one triaxial and the other with large axial deformation arising primarily from the neutrons.

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