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Evidence for collective oblate rotation in N = Z 68 Se

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2000

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Abstract

A γ-ray spectroscopic measurement of the N=Z nucleus 68Se has been made following the 12C(58Ni,2n) reaction at 185 and 220 MeV using Gammasphere and the Argonne Fragment Mass Analyzer. Despite a very low production cross section of 200(50)μb, two distinct rotational bands were found; the ground state band consistent with oblate collective rotation, and an excited band consistent with prolate rotation. These observations support long-standing predictions that nuclear ground states with substantial oblate (β2∼ −0.3)deformation should exist in this region.

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https://dspace-test.anu.edu.au/handle/1885/733757759

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DevOps Pure Testing

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Physical Review Letters

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Article

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DOI

10.1103/PhysRevLett.84.4064

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