A new method for on-line laser spectroscopy of radioactive atoms based on the resonant ionization spectroscopy of laser desorbed radioactive samples has been devised. An experimental set-up has been installed on-line at the ISOCELE mass separator in Orsay (France) and experiments have been performed on the transitional nuclei region around Z = 79. Four new isotopes $ sp{194,196,198,199}$Au have been added to the series of the isotopic shift measurements in gold and results on the neutron deficient isotopes down to $ sp{186}$Au have been obtained, confirming the nuclear ground-state shape transition from oblate to prolate between $ sp{187}$Au and $ sp{186}$Au. The first isotopic shift measurements on radioactive platinum have been obtained on $ sp{186,188,189}$Pt. Indications of a shape transition have been observed between $ sp{186}$Pt and $ sp{188}$Pt. The extracted experimental changes in mean square charge radii $ delta$ $ sp{A,A{ sp prime}}$ along isotopic chains are compared to self-consistent Hartree-Fock plus BCS calculations.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.75851 |
| Date | January 1988 |
| Creators | Savard, Guy |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Physics.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000730905, proquestno: AAINL48555, Theses scanned by UMI/ProQuest. |
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