In-beam spectroscopy of ⁷²Ge

Title: In-beam spectroscopy of ⁷²Ge
Creator: Henninger, Katharine Rose
Subject: Nuclear shapes
Subject: Hyperfine structure
Date Issued: 2012
Date: 2012
Type: Thesis
Type: Masters
Type: MSc
Identifier: vital:5559
Identifier: http://hdl.handle.net/10962/d1018233
Description: The high-spin states of the nucleus ⁷²Ge were populated via the ⁷°Zn(a,2n)⁷²Ge fusion-evaporation reaction at a beam-energy of 30 MeV. The ')'-decays were observed with the AFRODITE spectrometer array at iThemba LABS (Faure, South Africa). Twenty-seven new transitions, 18 new levels and 2 new bands were added to the ⁷²Ge level scheme, and several corrections were made to t he previously-known level scheme. Transitions were characterised using Directional Correlation from Oriented states (DCO) and polarisation measurements, and spin-parity assignments were made for 7 new levels. Spin and parity were also reassigned to a previously-known structure. One of the new bands was ident ified as part of an octupole-vibrational band. No tetrahedral states were observed in the scheme despite N = 40 and Z = 32 having been identified as tetrahedral magic numbers. The meaning of the new 14⁺ yrast level for the underlying structure of the ground state band is discussed
Format: 112 leaves
Format: pdf
Publisher: Rhodes University
Publisher: Faculty of Science, Physics
Language: English
Rights: Henninger, Katharine Rose

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