Construction and commissioning of a collinear laser spectroscopy setup at TRIGA Mainz and laser spectroscopy of magnesium isotopes at ISOLDE (CERN) [Elektronische Ressource] / Jörg Krämer

Construction and Commissioning of aCollinear Laser Spectroscopy Setupat TRIGA MainzandLaser Spectroscopy of Magnesium Isotopesat ISOLDE (CERN)Dissertationzur Erlangung des Grades”Doktor der Naturwissenschaften”im Promotionsfach Chemieam Fachbereich Chemie, Pharmazie und Geowissenschaftender Johannes Gutenberg-Universit¨atin MainzJ¨org Kr¨amergeb. in AlzeyMainz, den 22. Juli 2010.iiAbstractCollinear laser spectroscopy has been used as a tool for nuclear physics for more than 30 years.The model-independent extraction of nuclear ground-state properties from optical spectra de-livers important physics results to test the predictive power of nuclear models. A study of theisotope shift allows the extraction of the change in the mean square nuclear charge radius asa measure for nuclear size. Odd-proton or odd-neutron number isotopes have a non-vanishingtotal nuclear angular momentum (spin) and therefore exhibit a hyperfine structure in the elec-tronic transition. The detailed analysis of this property yields the nuclear spin I, the nucleardipole moment , and in special cases also the electric quadrupole moment Q. Collinear laserspectroscopy combines this experimental method with the spectroscopy on fast ion or atombeams, which is ideally suited for the study of short-lived isotopes and can be readily adaptedto specific experimental needs.