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Negative-parity inversion doublet α-cluster band in O18

par Reidemeister, Guy ;Michel, Francis
Référence Physical review. C. Nuclear physics, 47, 5, page (R1846-R1849)
Publication Publié, 1993

Article révisé par les pairs

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Résumé :

The α-cluster structure of the O18 nucleus is investigated by studying the properties of a global optical model potential which describes C14(α,α) elastic scattering at 28, 40, and 54 MeV on the whole angular range. This calculation does not support the existence of the negative-parity molecular dipole states which have been proposed to coexist with the positive-parity four-particle-two-hole (4p-2h) deformed band built on the Jπ=0+, Ex=3.63 MeV state. It suggests that the broad Jπ=1- state recently seen around Ex=9 MeV in the β-delayed α-particle spectrum from N18 is the bandhead of the negative-parity inversion-doublet partner band of the 4p-2h band. © 1993 The American Physical Society.