Petts, Andrew
Shape coexistence and collectivity in neutron-deficient mercury isotopes.
Doctor of Philosophy thesis, University of Liverpool.
![[img]](https://livrepository.liverpool.ac.uk/style/images/fileicons/application_pdf.png) |
PDF (Original deposit - wrong file name)
Thesis.pdf - Submitted version Access to this file is embargoed until Unspecified. Available under License Creative Commons Attribution No Derivatives. Download (7MB) |
|
PDF (Renamed file)
PettsAnd_Sep2010_3073.pdf - Author Accepted Manuscript Available under License Creative Commons Attribution No Derivatives. Download (7MB) |
Abstract
Recoil Distance Doppler Shift measurements of 182Hg have been performed at the University of Jyväskylä utilising the Köln plunger device. Lifetimes of excited yrast states up to the 10+ state have been measured. The 2+ , 4+ , 6+ , 8+ and 10+ states were found to have lifetimes of 41(3) ps, 35.7(15) ps, 8.2(5) ps, 2.9(3) ps and 1.2(3) ps respectively. The high collectivity of the states with Iπ ≤ 4+ indicate their prolate deformed character. In 182Hg the 2+ yrast state was deduced to be a strong admixture of the coexisting prolate and oblate structures. Coulomb excitation measurements of 182,186Hg performed at REX-ISOLDE using the MINIBALL HPGe array examine the quadrupole moment and transitional matrix elements associated to the 2+_1 , 2+_2 and 4+_1 states in 182Hg and the 2+_1 state in 186Hg. The spectroscopic quadrupole moment of the 2+_1 state in 182Hg measured -0.45 eb, indicating prolate deformed character. Conversely, the 2+1 state in 186Hg was found to be oblate from the spectroscopic quadrupole moment of +1.74 eb. Transitional matrix elements for both 182Hg and 186Hg were found to be in agreement with those from lifetime measurements.
| Item Type: | Thesis (Doctor of Philosophy) |
|---|---|
| Additional Information: | Date: 2010-09 (completed) |
| Subjects: | ?? QC ?? |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 25 Aug 2011 15:58 |
| Last Modified: | 16 Dec 2022 04:36 |
| DOI: | 10.17638/00003073 |
| Supervisors: |
|
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3073 |
Dimensions
Dimensions
