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Title: A shell model study of the high spin states of 88,89Y
Author: Bunce, Michael B.
Awarding Body: University of Surrey
Current Institution: University of Surrey
Date of Award: 2013
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Experiments were carried out at the Wright Nuclear Structure Laboratory (WNSL) at Yale University using the 21MV ESTU Tandem Van de Graaff accelerator with the purpose of studying the high spin states of 88/39Y and 89/39Y. A beam of 180 im- pinged at a laboratory energy of 60 MeV on a 600 pg/cm2 74Ge target with a thick (10 mg] cm2) 197 Au backing. This experiment was performed with the specific aim of accessing medium to high spin states of the nucleus of interest. A second exper- iment was undertaken to populate the nucleus of interest in higher spin states by impinging a 180 beam on a thin 62 μg] cm? 76Ge target with a 20 μg/ cm2 carbon backing at a laboratory beam energy of 90 Me V. Gamma rays emitted following the decay of excited states in 88,89y and other nuclei populated in the reactions were measured using the YRAST ball detector array, consisting of 10 Compton sup- pressed HPGe clover detectors. There are 17 previously unreported γ( rays identified and placed in the respective level schemes in the current work for 88,89Y In conjunc- tion with the experimental study presented in the body of this work, nuclear shell model calculations using the code NuShellX with a truncated valence space have also been performed in an attempt to describe the single-particle make-up of the states observed.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available