title: Collinear Laser Spectroscopy of Potassium : Nuclear Charge Radii beyond N=28
creator: Kreim, Kim Dieter
subject: ddc-530
subject: 530 Physics
description: Nuclear ground-state properties, such as spin, charge radius, and magnetic dipole and electric quadrupole moments are important quantities to describe the nucleus. The comparison of experimental data to shell-model calculations gives insight in the underlying nuclear structure and composition of ground-state wave functions. Spins and charge  radii can also be used to test the predictions of state-of-the-art microscopic models. This work contributes to these studies providing new measurements in the region of the nuclear chart around the magic proton number Z=20. The data have been obtained at the collinear laser spectroscopy setup COLLAPS located at the radioactive-ion-beam facility ISOLDE at CERN. Using bunched-beam laser spectroscopy hyper fine structure spectra of the potassium isotopes with mass number A=48-51 could be recorded for  the first time.  Ground-state spins and isotope shifts could be deduced for 48-51K contributing to the evolution of the proton d3/2 orbital beyond the shell closure at the magic neutron number  N=28. Charge radii deduced from isotope shifts provide information towards the systematics of the charge radii in the calcium region beyond the N=28 shell closure.  While theoretical calculations predict the correct spins, the charge radii still provide a challenge even to the newest relativistic mean-field and coupled cluster models.
date: 2013
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/15232/1/Thesis_Kim_Kreim.pdf
identifier: DOI:10.11588/heidok.00015232
identifier: urn:nbn:de:bsz:16-heidok-152325
identifier:   Kreim, Kim Dieter  (2013) Collinear Laser Spectroscopy of Potassium : Nuclear Charge Radii beyond N=28.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/15232/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng