Spectroscopy of Ti54 and the systematic behavior of low-energy octupole states in Ca and Ti isotopes

We report excited states of the N = 32 nucleus 54Ti have been studied, via both inverse-kinematics proton scattering and one-neutron knockout from 55Ti by a liquid hydrogen target, using the GRETINA γ-ray tracking array. Inelastic proton-scattering cross sections and deformation lengths have been de...

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Bibliographic Details
Published in:Physical review. C 2017-12, Vol.96 (6)
Main Authors: Riley, L. A., Agiorgousis, M. L., Baugher, T. R., Bazin, D., Blanchard, R. L., Bowry, M., Cottle, P. D., DeVone, F. G., Gade, A., Glowacki, M. T., Kemper, K. W., Kustina, J. S., Lunderberg, E., McPherson, D. M., Noji, S., Piekarewicz, J., Recchia, F., Sadler, B. V., Scott, M., Weisshaar, D., Zegers, R. T.
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
collective levels
direct reactions
H & He induced nuclear reactions
nuclear structure & decays
random phase approximation
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Summary:We report excited states of the N = 32 nucleus 54Ti have been studied, via both inverse-kinematics proton scattering and one-neutron knockout from 55Ti by a liquid hydrogen target, using the GRETINA γ-ray tracking array. Inelastic proton-scattering cross sections and deformation lengths have been determined. A low-lying octupole state has been tentatively identified in 54Ti for the first time. A comparison of (p,p′) results on low-energy octupole states in the neutron-rich Ca and Ti isotopes with the results of random phase approximation calculations demonstrates that the observed systematic behavior of these states is unexpected.
ISSN:2469-9985
2469-9993