Elsevier

Nuclear Physics A

Volume 413, Issue 2, 30 January 1984, Pages 255-289
Nuclear Physics A

Microscopic and macroscopic aspects of 135 MeV proton scattering from 16O

https://doi.org/10.1016/0375-9474(84)90375-0Get rights and content

Abstract

Differential cross sections have been measured for the scattering of 135 MeV protons from 16O and data from the transitions to 13 states (up to 19.5 MeV excitation) have been analysed using microscopic and macroscopic nuclear reaction models. Extensive collective model calculations have been made of the transitions to all natural-parity states. The deformation parameters for the 4p4h rotational band are in good agreement with theoretical models. The inelastic scattering data from the excitation of the negative-parity states have also been analysed in the distorted-wave approximation using microscopic (shell and RPA) models of nuclear structure and with density-dependent two-nucleon t-matrices. For positive-parity states, we report the first shell-model calculation using the complete 2ħω basis space and find that the triplet of 2p2h states (4+, 2+, 0+) around 11 MeV excitation is quite well described by this model, as may be a 1+ state which is observed for the first time by proton scattering from 16O.

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    Supported in part by the Australian Research Grants Scheme.

    ∗∗

    Current address: Koppers Process Technologies, 5600 Oakbrook Parkway, Suite 100, Norcross, Georgia 30093, USA.

    ∗∗∗

    Supported in part by the National Science Foundation.

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