The neutron deficient A∼90 nuclei constitute a good testing ground for shell model approaches based on spherical or deformed basis. New experimental data are presented for the 90Ru nucleus, as obtained with the reaction 40Ca+58Ni at 135 MeV. The yrast band has been extended to higher spin states and a new band, tentatively assigned as a negative parity band, has been identified. The observed structures are compared with predictions of the projected shell model, which uses a deformed basis. Possibility of the occurrence of low-lying high-K states in this nucleus is discussed.

High-spin states in 90Ru and the projected shell model description

LUNARDI, SANTO;LENZI, SILVIA MONICA;PAVAN, PIETRO;
2004

Abstract

The neutron deficient A∼90 nuclei constitute a good testing ground for shell model approaches based on spherical or deformed basis. New experimental data are presented for the 90Ru nucleus, as obtained with the reaction 40Ca+58Ni at 135 MeV. The yrast band has been extended to higher spin states and a new band, tentatively assigned as a negative parity band, has been identified. The observed structures are compared with predictions of the projected shell model, which uses a deformed basis. Possibility of the occurrence of low-lying high-K states in this nucleus is discussed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2444854
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