Two experimental campaigns were performed at the Collinear Resonance Ionization Spectroscopy (CRIS) experiment, located at the ISOLDE radioactive-beam facility. The spectroscopic quadrupole moment of 203Fr was measured. Its magnitude with respect to the other even-N francium isotopes below N = 126 suggests an onset of static deformation. However, calculations of the static and total deformation parameters reveal that it cannot be considered as purely statically deformed. The neutron-rich radium isotopes were investigated. The spectroscopic quadrupole moment of 231Ra was measured and the continuation of increasing quadrupole deformation with neutron number in neutron-rich radium isotopes was further established. Measurements of the changes in mean-square charge radii of 231-233Ra allowed the odd-even staggering parameter to be calculated for 230-232Ra. A normal odd-even staggering which increases in magnitude with neutron number was observed in these isotopes.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:740399 |
| Date | January 2018 |
| Creators | Wilkins, Shane |
| Publisher | University of Manchester |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | https://www.research.manchester.ac.uk/portal/en/theses/collinear-resonance-ionization-spectroscopy-of-exotic-francium-and-radium-isotopes(a55e8b28-6746-4f6d-8403-ba7edba564ab).html |
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