Generation of the Basis States for the Calculation of the Effects of Core Excitations on the Low-lying Negative Parity States of 90 Zr.

From the various theoretical studies reported on the low-lying levels in 90 Zr, it has been established that the spectrum is rather anomalous in that it has attributes of a simple two-proton coupling and some collectivity, notably with the 21+, 22+ and 31- low-lying states. The basis states neces...

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Bibliografiske detaljer
Hovedforfatter: Jegede, Oluwagbemiga Olawale
Andre forfattere: Amusa, A.
Format: Thesis
Sprog:engelsk
Udgivet: Obafemi Awolowo University 2014
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Online adgang:http://localhost:8080/xmlui/handle/123456789/3533
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Summary:From the various theoretical studies reported on the low-lying levels in 90 Zr, it has been established that the spectrum is rather anomalous in that it has attributes of a simple two-proton coupling and some collectivity, notably with the 21+, 22+ and 31- low-lying states. The basis states necessary for the inclusion of core excitations in the low-lying negative parity states (J<7-) in 90 Zr are generated in this work. It is hoped that the eventual inclusion of core excited states in manner specified by Lawson in the study of the low-lying positive parity states for 18 O would lead to reproducing the experimental energy levels for these low-lying states better than was obtained with the previous models.