Collective excitations in the transitional nuclei 163Re88 and 165Re90

Davis-Merry, Tom (2014) Collective excitations in the transitional nuclei 163Re88 and 165Re90. Master of Philosophy thesis, University of Liverpool.

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Abstract

Excited states in the neutron-deficient nuclei 163Re88 and 165Re90 have been populated in the 106Cd(60Ni,p2nγ) and 92Mo(78Kr,3p2nγ) fusion-evaporation reactions at bombarding energies of 270 MeV and 357 MeV, respectively. Gamma rays were detected at the target position using the jurogam spectrometer array while recoiling ions were separated in-flight by the ritu gas-filled recoil separator and implanted into the double-sided silicon strip detectors of the great spectrometer. The level excitation schemes for 163Re and 165Re have been identified using recoil-decay correlation techniques. At low spin, the yrast bands of these isotopes are strongly coupled bands based on a single πh11/2 quasiproton configuration. The bands display large signature splitting consistent with the soft triaxial shape typical of transitional nuclei above N = 82. The configurations of the excited states are proposed within the framework of the cranked shell model.

Item Type:	Thesis (Master of Philosophy)
Subjects:	Q Science > QC Physics
Depositing User:	Symplectic Admin
Date Deposited:	24 Aug 2016 14:16
Last Modified:	24 Aug 2016 14:16
URI:	http://livrepository.liverpool.ac.uk/id/eprint/2047099

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