Nuclear dipole magnetic moments have been measured for highly neutron deficient light rare-earth nuclei using the technique of on-line low temperature nuclear orientation. A novel pulsed implantation technique 139 has been used to set a limit of the relaxation times of both 139Eu and 139Sm isotopes in iron of < 3s. The measured moments are compared to calculations using a particle plus triaxial rotor model, and the ground-state configurations are discussed. The large magnetic moment for the nucleus 138Eu enables the assignment of the (pi5/2- [532] x nu7/2+ [404]) 6- Nilsson two-quasiparticle configuration. The measured moments for both 139Eu and 139Smm are explained in terms of the weak coupling of the respective odd-nucleon to a strongly triaxial rotating core.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:279601 |
| Date | January 1991 |
| Creators | Singleton, Barry Duane Dmitri |
| Publisher | University of Surrey |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://epubs.surrey.ac.uk/843406/ |
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